| Organisation Name | Incorporated | Headquarters | Parent department | Role | Type | Remarks | Website |
| 1 | Tamil Nadu Adi Dravidar Housing and Development Corporation Limited (TAHDCO) | 1974 | | | Socioeconomic/Skill Development and Housing for SC/ST people | State Govt. Undertaking | | www.tahdco.tn.gov.in |
| 2 | Tamil Nadu Backward Classes Economic Development Corporation (TABCEDCO) | 1981 | Chennai | | Economic Betterment for BC/MBC/DNC people | State Govt. Undertaking | | |
| 3 | Tamil Nadu Wakf Board | 1958 | Chennai | | Wakf Administration | State Govt. Undertaking | | www.tnwakfboard.org |
| 4 | Tamil Nadu State Hajj Committee | 1958 | Chennai | | Hajj Pilgrimage Orientation | State Govt. Undertaking | | www.hajjtn.in |
| 5 | Tamil Nadu Minorities Economic Development Corporation Limited (TAMCO) | 1999 | Chennai | | Socioeconomic Development of Minority people | State Govt. Undertaking | | Website |
| 6 | Tamil Nadu Corporation For Development of Women Limited (TANCDW) | 1983 | Chennai | Rural Development & Panchayat Raj | Women Empowerment | State Govt. Undertaking | | www.tamilnaduwomen.org |
| 7 | Dharmapuri District Socio Economic Development Society (DDSEDS) | | Chennai | | | | | |
| 8 | Vanniyar Public Property Welfare Board | | Chennai | | | | | www.tn.gov.in/vppwb/ |
| 9 | Non-Resident Tamils' Welfare Board | 13 December 2010 | Chennai | | | | | |
| 10 | Tamil Nadu Rural Housing and Infrastructure Development Corporation Limited (TN Rural Housing) | | | | | | | | |
| Company | Incorporated | Headquarters | Parent department | Role | Type | Remarks | Website |
| 1 | Tamil Nadu Public Service Commission (TNPSC) | | Chennai | | | | | http://www.tnpsc.gov.in/ |
| 2 | Tamil Nadu Powerloom Weaving Workers Welfare Board | | Chennai | | | | | |
| 3 | Tamil Nadu Footwear, Leathers Goods Manufactory and Tannery Workers Welfare Board | | Chennai | | | | | |
| 4 | Tamil Nadu Artists Welfare Board | | Chennai | | | | | |
| 5 | Tamil Nadu Goldsmiths Welfare Board | | Chennai | | | | | |
| 6 | Tamil Nadu Pottery Workers Welfare Board | | Chennai | | | | | |
| 7 | | 1978 | Chennai | Labour and Employment | Overseas Manpower Outsourcing | State Govt. Undertaking | | www.omcmanpower.com |
| 8 | Tamil Nadu Ex-Servicemen Corporation Limited (TEXCO) | 1986 | Chennai | Public | Ex-Servicemen Rehabilitation | State Govt. Undertaking | | www.texco.in |
| 9 | Tamil Nadu Construction Workers Welfare Board | 1974 | | | | State Govt. Welfare | | http://www.tn.gov.in/rti/proactive/labour/handbook_tncwwb.pdf |
| 10 | Tamil Nadu Manual Workers Social Security and Welfare Board | | Chennai | | | State Govt. Undertaking | | |
| 11 | Tamil Nadu State Advisory Contract Labour Board | | Chennai | | | | | |
| 12 | Tamil Nadu Plantation Labour Housing Advisory Board | | Chennai | | | | | |
| 13 | Tamil Nadu State Labour Advisory Board | | Chennai | | | | | |
| 14 | Tamil Nadu Washermen Welfare Board | | Chennai | | | | | |
| 15 | Tamil Nadu Hairdressers Welfare Board | | Chennai | | | | | |
| 16 | Tamil Nadu Auto Rickshaw and Taxi Drivers Welfare Board | | Chennai | | | | | |
| 17 | Tamil Nadu Domestic Workers Welfare Board | | Chennai | Labour and Employment | | | | |
| 18 | Tamil Nadu Tailoring Workers Welfare Board | | | | | | | |
| 19 | Tamil Nadu Handicrafts Workers Welfare Board | | | | | State Govt. Welfare | | |
| 20 | Tamil Nadu Palm Tree Workers Welfare Board | | Chennai | | | State Govt. Undertaking | | |
| 21 | Tamil Nadu Handlooms and Handloom Silk Weavers Welfare Board | | Chennai | | | | | |
| 22 | Tamil Nadu Skill Development Corporation Limited (TNSDC) | 2013 | Chennai | Labour and Employment | Skill Development | State Govt. Undertaking | | www.tnskill.tn.gov.in | |
| Company | Incorporated | Headquarters | Parent department | Role | Type | Remarks | Website |
| 1 | Tamil Nadu Transport Development Finance Corporation Limited | 1975 | | Transport | Transport Capital & Working Finance | State Govt. Undertaking | | www.tdfc.in |
| 2 | Tamil Nadu Industrial Investment Corporation Limited (TIIC) | 1949 | Chennai | Industries | Industries Investment Finance | State Govt. Undertaking | | www.tiic.org |
| 3 | Tamil Nadu Power Finance and Infrastructure Development Corporation Limited (POWERFIN) | 1991 | Chennai | Energy | Electricity Finance | State Govt. Body | NBFC | www.tnpowerfinance.com |
| 4 | Tamil Nadu Urban Finance and Infrastructure Development Corporation Limited (TUFIDCO) | 1990 | Chennai | Municipal Administration and Water Supply | Urban Infrastructure Finance | State Govt. Undertaking | Nodal Agency | Website |
| 5 | Tamil Nadu Urban Infrastructure Financial Services Limited (TNUIFSL) | 1996 | Chennai | Municipal Administration and Water Supply | Urban Infrastructure Finance and Solutions | State Govt. Undertaking | | www.tnudf.com |
| 6 | | 26 November 1905 | Chennai | | Banking | Co-operative Body | NBFC | www.tnscbank.com |
| 7 | | 13 September 1961 | Chennai | | Banking | Co-operative Body | | www.taicobank.com/aboutus.htm |
| 8 | | | Chennai | | Banking | Co-operative Body | | |
| 9 | Tamil Nadu Infrastructure Fund Management Corporation Limited (TN Infra Management) | | | | | | | | |
| Company | Incorporated | Headquarters | Department | Role | Type | Remarks | Website |
| 1 | | 1972 | | Industries | Large & Medium scale Industries Promotion | State Govt. Body | | www.sipcot.com |
| 2 | | 1965 | Chennai | Industries | Industrial Infrastructure Services/Finances | State Govt. Undertaking | | tidco.tn.gov.in |
| 3 | | 1970 | Chennai | Micro, Small and Medium Enterprises | Small-scale Industries Promotion | State Govt. Undertaking | | www.sidco.tn.nic.in |
| 4 | Tamil Nadu Industrial Guidance and Export Promotion Bureau (Guidance Tamil Nadu) | 1992 | Chennai | Industries | Investment Attraction & Documentation, Export Promotion | State Govt. Body | | www.investingintamilnadu.com |
| 5 | | 1997 | Chennai | Information Technology | Electronics & IT Industries Promotion, e-Governance | State Govt. Undertaking | | www.elcot.in |
| 6 | ITCOT Limited (Industrial and Technical Consultancy Organisation of Tamil Nadu) | 1979 | Chennai | Industries | Industrial and Technical Consultancy Services | JV of Govt. of Tamil Nadu & Leading Financial Institutions | | www.itcot.com |
| 7 | TIDEL Park Limited (TIDEL,Chennai) | 2000 | Chennai | Industries | Information Technology Park | TIDEL Park Ltd., a joint venture of TIDCO and ELCOT | | www.tidelpark.com |
| 8 | Nilakottai Food Park Limited (Nilakottai) | | | Industries | Food Park | | | |
| 9 | Guindy Industrial Estate Infrastructure Upgradation Company (Guindy Industrial Estate) | | | Industries | Large & Medium scale Industries Promotion | State Govt. Body | | |
| 10 | TICEL Bio Park Limited (TICEL Bio Park) | | | Industries | Bio Park | State Govt. Body | | | |
| Company | Incorporated | Headquarters | Parent department | Role | Type | Remarks | Website | Share Holding |
| 1 | Tamil Nadu Newsprint and Papers Limited (TNPL) | 1984 | | Industries | | State Govt. Undertaking | | www.tnpl.com | Presently Government of Tamil Nadu holds 35.32% of Equity shares in TNPL as of 31 March 2012 as per http://www.tnpl.com/DisplayPage.aspx?file=share_holding.htm |
| 2 | | 1976 | Chennai | Industries | Manufacture of Cements, Asbestos Sheets & Stone Ware Pipes | State Govt. Undertaking | | www.tancem.com | |
| 3 | | 1979 | | Industries | Magnesite Mining | State Govt. Undertaking | | www.tn.gov.in/tanmag | |
| 4 | | 1983 | Chennai | Industries | Manufacture of Industrial Explosives | State Govt. Undertaking | | www.tniel.net | |
| 5 | | 1978 | Chennai | Industries | Exploitation, Processing & Marketing of Minerals | State Govt. Undertaking | | www.tamingranites.com | |
| 6 | | 1963 | Chennai | Micro, Small and Medium Enterprises | Small-scale Industrial units | State Govt. Undertaking | | www.tansi.tn.gov.in | |
| 7 | Tamil Nadu Co-operative Sugar Federation (TNCSF) | 1961 | Chennai | Industries | Sugar Mills | Co-operative Society | | www.tncsf.net.in | |
| 8 | | 1974 | Chennai | Industries | Sugar Mills Promotion | State Govt. Undertaking | Perambalur Sugar Mills Limited -subsidiary company | www.tasco.net.in | |
| 9 | Tamil Nadu Salt Corporation Limited (TNSC) | 1974 | Chennai | Industries | Salt Production | State Govt. Undertaking | | www.tnsalt.com | |
| 10 | Southern Structurals Limited (SSL) | 1956 | Chennai | Industries | Engineering, Manufacturing & Services | State Govt. Undertaking | Acquired by Govt. of Tamil Nadu in 1971 | Website | |
| 11 | Tamil Nadu Paints And Allied Products Limited (TAPAP) | 1963 | Chennai | Micro, Small and Medium Enterprises | Paints And Allied Products Manufacture | Subsidiary of TANSI | | Website | |
| 12 | Tamil Nadu Polymer Industries Park Limited (TNPIP LIMITED) | | | | | | | | |
| 13 | Madurai Thoothukudi Industrial Corridor Development Corporation Limited (MTICD Limited) | | | | | | | | | |
| Company | Incorporated | Headquarters | Parent department | Role | Type | Remarks | Websites |
| 1 | | 1961 | | Housing and Urban Development | Housing Services | | | www.tnhb.gov.in |
| 2 | | 1971 | Chennai | Municipal Administration and Water Supply | Provision of Water and Sewerage facilities | Statutory Corporation | | www.twadboard.gov.in |
| 3 | Tamil Nadu Police Housing Corporation (TNPHC) | 1981 | Chennai | Home, Prohibition and Excise | Housing Services for Police, Prison & Fire services personnel | State Govt. Undertaking | | www.tnphc.com |
| 4 | | 1972 | Chennai | Housing and Urban Development | Chennai Metro Planning Services | Statutory Corporation | | www.cmdachennai.gov.in |
| 5 | | 1978 | Chennai | Municipal Administration and Water Supply | Provision of Water and Sewerage facilities to Chennai Metropolitan Area | Statutory Corporation | | www.chennaimetrowater.tn.nic.in |
| 6 | | 1970 | Chennai | Housing and Urban Development | Rehabilitation of urban slums | Statutory Corporation | | www.tnscb.org.in |
| 7 | New Tirupur Area Development Corporation Limited | 1995 | Chennai | Municipal Administration and Water Supply | Tirupur Area Development Programme | JV of Govt. of Tamil Nadu & Infrastructure Leasing and Financial Services Limited | | www.ntadcl.com |
| 8 | Tamil Nadu Road Development Company Limited (TNRDC) | 1998 | Chennai | Highways and Minor Ports | Road Infrastructure Finance & Development | JV of TIDCO & Govt. of Tamil Nadu | | www.tnhighways.org/tnrdc.htm |
| 9 | Tamil Nadu Road Infrastructure Development Corporation | 2005 | Chennai | Highways and Minor Ports | Road Infrastructure Development in Industrial Clusters | State Govt. Undertaking | | Website |
| 10 | Tamil Nadu State Construction Corporation Limited | 2005 | Chennai | Public Works | Construction | State Govt. Undertaking | | [www.tn.gov.in/departments/pwd.html Website] |
| 11 | IT Expressway Limited (ITEL) | | | Roadways | Housing Services | Joint Venture of TIDCO and TIDEL | | www.itel.tnrdc.com | |
| Company | Incorporated | Headquarters | Parent department | Role | Type | Remarks | Website |
| 1 | The Tamil Nadu Handicrafts Development Corporation Limited (Poompuhar) | 1973 | | Handlooms, Handicrafts, Textiles and Khadi | Training, Sales, Production of Handicrafts | State Govt. Undertaking | | www.poompuhar.org |
| 2 | Tamil Nadu Khadi and Village Industries Board (Khadi Kraft) | 1960 | Chennai | Handlooms, Handicrafts, Textiles and Khadi | Cottage Industries Promotion & Marketing | | | Website |
| 3 | Tamil Nadu Palm Products Development Board | 1995 | Chennai | Handlooms, Handicrafts, Textiles and Khadi | Palm Products Promotion & Marketing | State Govt. Undertaking | | Website |
| 4 | Tamil Nadu State Palmgur and Fibre Marketing Cooperative Federation | 1995 | Chennai | Handlooms, Handicrafts, Textiles and Khadi | Palm Products Production | | | Website |
| 5 | Tamil Nadu Co-operative Silk Producers Federation Limited (TANSILK) | 1978 | | Handlooms, Handicrafts, Textiles and Khadi | Silk Purchase | Co-operative Society | | Website | |
| Company | Incorporated | Headquarters | Department | Role | Type | Remarks | Website |
| 1 | | 1935 | | Handlooms, Handicrafts, Textiles and Khadi | Purchase & Supply of Yarns to Co-operative societies, Procurement & Marketing of Products from Co-operative societies | | | www.cooptex.com |
| 2 | Tamil Nadu Handloom Development Corporation Limited (THDC) | 1964 | Chennai | Handlooms, Handicrafts, Textiles and Khadi | Handloom Finance | State Govt. Undertaking | | Website |
| 3 | Tamil Nadu Textile Corporation Limited | 1969 | | Handlooms, Handicrafts, Textiles and Khadi | Cloth Production (Powerloom) | State Govt. Undertaking | | www.tanfab.in |
| 4 | Tamil Nadu Zari Limited | 1971 | | Handlooms, Handicrafts, Textiles and Khadi | Gold Lace Production for Sarees | State Govt. Undertaking | | |
| 5 | Tamil Nadu Co-operative Textile Processing Mills Limited (TCTP) | 1973 | | Handlooms, Handicrafts, Textiles and Khadi | Textile Processing | Co-operative society | | Website |
| 6 | Tamil Nadu Co-operative Spinning Mills Federation Limited (TANSPIN) | 1994 | Chennai | Handlooms, Handicrafts, Textiles and Khadi | Procurement & Supply of Cotton | Co-operative society | | Website | |
| Company | Incorporated | Headquarters | Parent department | Role | Type | Remarks | Website |
| 1 | | 1996 | | Transport | Public Bus Transport Services | State Govt. Undertaking | Inter-state operations | www.tnstc.in |
| 2 | | 1946 | Chennai | Transport | Public Bus Transport Services | State Govt. Undertaking | Chennai city and suburban operation | www.mtcbus.org |
| 3 | Pallavan Transport Consultancy Services Limited | 20 February 1984 | Chennai | Transport | Consultancy for Transport projects | State Nodal Agency | | Website |
| 4 | Tamil Nadu Maritime Board | 1997 | Chennai | Highways and Minor Ports | Ports Development | State Govt. Undertaking | | www.tnmaritime.com |
| 5 | | 1974 | Chennai | Highways and Minor Ports | Shipping | State Govt. Undertaking | | www.tamilship.com |
| 6 | | 1972 | Divisional Headquarters at Vellore, Villuppuram, Salem, Coimbatore, Kumbakonam, Srirangam, Madurai, Tirunelveli | Transport | Public Bus Transport Services | State Govt. Undertaking | Segmented into seven independent divisions | www.tnstc.in |
| 7 | | 1972 | Divisional Headquarters at Vellore, Villuppuram, Salem, Coimbatore, Kumbakonam, Srirangam, Madurai, Tirunelveli | Transport | Public Bus Transport Services | State Govt. Undertaking | Segmented into seven independent divisions | www.tnstc.in |
| 8 | | 1972 | Divisional Headquarters at Vellore, Villuppuram, Salem, Coimbatore, Kumbakonam, Srirangam, Madurai, Tirunelveli | Transport | Public Bus Transport Services | State Govt. Undertaking | Segmented into seven independent divisions | www.tnstc.in |
| 9 | | 1972 | Divisional Headquarters at Vellore, Villuppuram, Salem, Coimbatore, Kumbakonam, Srirangam, Madurai, Tirunelveli | Transport | Public Bus Transport Services | State Govt. Undertaking | Segmented into seven independent divisions | www.tnstc.in |
| 10 | | 1972 | Divisional Headquarters at Vellore, Villuppuram, Salem, Coimbatore, Kumbakonam, Srirangam, Madurai, Tirunelveli | Transport | Public Bus Transport Services | State Govt. Undertaking | Segmented into seven independent divisions | www.tnstc.in |
| 11 | | 1972 | Divisional Headquarters at Vellore, Villuppuram, Salem, Coimbatore, Kumbakonam, Srirangam, Madurai, Tirunelveli | Transport | Public Bus Transport Services | State Govt. Undertaking | Segmented into seven independent divisions | www.tnstc.in |
| 12 | | 1972 | Divisional Headquarters at Vellore, Villuppuram, Salem, Coimbatore, Kumbakonam, Srirangam, Madurai, Tirunelveli | Transport | Public Bus Transport Services | State Govt. Undertaking | Segmented into seven independent divisions | www.tnstc.in |
| 13 | Chennai Metro Rail Limited | 29 June 2015 | Chennai | Transport | Metro Rail services | Undertaken by State Govt. and central Govt. | A joint P.S.U. Between government of Tamil Nadu and government of India. Operates currently in chennai as chennai metro, plans to operate in coimbatore as coimbatore metro | www.chennaimetrorail.org |
|
| Agency Name | Incorporated | Headquarters | Parent department | Role | Type | Closing / Re – Organisation | Present Status | News |
| 1 | Tamil Nadu Dairy Development Corporation Limited | July 1972 | | Dairy | | State Govt. Undertaking | February 1981 | re-organised as Tamil Nadu Co-Operative Milk Producers Federation Limited | http://www.indiankanoon.org/doc/1872494/ |
| 2 | Tamil Nadu Agro-Industries Development Corporation Limited | 1966 | Chennai | Industries | | 26 March 2002 | | http://www.indiankanoon.org/docfragment/1751585/?formInput=tamil%20nadu%20agro | |
| 3 | Tamil Nadu State Farms Corporation Limited | | | | | | | | |
| 4 | Tamil Nadu Ceramics Limited | 15 July 1974 | Chennai | Industries | Manufacture of Ceramic Products (including Sanitary ware) in Ranipettai Industrial Estate | State Govt. Undertaking | | Closed & Merged with Tamil Nadu Industries Department, Government of Tamil Nadu | https://web.archive.org/web/20131207190850/http://tacel.in/home |
| 5 | Tamil Nadu Sugarcane Farm Corporation Limited | 1974 | Chennai | | | State Govt. Undertaking | | Merged with Sugar Department, Government of Tamil Nadu | |
| 6 | Tamil Nadu Goods Transport Corporation Limited | 1975 | Chennai | | | State Govt. Undertaking | | Merged with Tamil Nadu State Transport Corporation as Goods Transport Division | |
| 7 | Dharmapuri District Development Corporation Limited | 1975 | | | | | | re-organised & presently functioning as Dharmapuri District Socio Economic Development Society (DDSEDS) | |
| 8 | State Engineering and Servicing Corporation of Tamil Nadu Limited | | | | | | | Merged with Tamil Nadu Agricultural Engineering Department as Engineering Services Division | |
| 9 | Tamil Nadu State Tube Wells Corporation Limited | 1982 | | | | State Govt. Undertaking | | | |
| 10 | Tamil Nadu State Sports Development Corporation Limited | 1984 | | | | State Govt. Undertaking | | presently functioning as Sports Development Authority of Tamil Nadu by merging with other entities | |
| 11 | Chit Corporation of Tamil Nadu Limited | 1984 | | | | | 2002 | Merged with Tamil Nadu Revenue Department | |
| 12 | Tamil Nadu Spirit Corporation Limited | | Chennai | Industries | | | 2002 | | |
| 13 | Tamil Nadu Graphite Limited | | | | | | | | |
| 14 | Cheran Engineering Corporation Limited | 1974 | Chennai | Industries | | State Govt. Undertaking | | Closed | |
| 15 | Tamil Nadu Theater Corporation Limited | 1972 | Chennai | | | State Govt. Undertaking | | | |
| 16 | Tamil Nadu Meat Corporation Limited | 1981 | | | | State Govt. Undertaking | | | |
| 17 | Tamil Nadu Leather Development Corporation Limited | 1983 | | | | | | presently functioning Leather Division Tamil Nadu Khadi and Village Industries Board, taken over merging by the Tamil Nadu Khadi and Village Industries Board | |
| 18 | Tamil Nadu Corporation of Industrial Infrastructure Development Limited (TACID) | March 1992 | | | | | 1 November 1999 | merged with State Industries Promotion Corporation of Tamil Nadu |
|
| 19 | Tamil Nadu Board of Revenue | 1790 | | | | | 1980 | re-organised or merged as sub – departments of Tamil Nadu Revenue Department | https://books.google.com/books?id=XIbt79hR-hIC&dq=tamil+nadu+government+Tamil+Nadu+Steels+Limited+%28TANSTEEL%29&pg=PA139 |
| 20 | Tamil Nadu Steels Limited (TANSTEEL) | | | | | | 2000 | closed | https://web.archive.org/web/20120530093537/http://www.tn.gov.in/policynotes/archives/policy%20%202001_02/rev-e-2001-2.htm |
| 21 | Tamil Nadu Poultry Development Corporation Limited (TAPCO) | March 1992 | | | | | 1 November 1999 | merged with State Industries Promotion Corporation of Tamil Nadu |
|
| 22 | Tamil Nadu Magnesium and Marine Chemicals Limited | | | | | State Govt. Undertaking | | | |
| 23 | Industrial and Technical Consultancy Organisation of Tamil Nadu (ITCOT) | | | | | | | ITCOT Consultancy and Services Limited |
| State Industries Promotion Corporation of Tamil Nadu (SIPCOT), Tamil Nadu Small Industries Development Corporation Limited | Tamil Nadu Small Industries Development Corporation Limited (TANSIDCO), Tamil Nadu Industrial Investment Corporation Limited | Tamil Nadu Industrial Investment Corporation Limited (TIIC) |
| 24 | Tamil Nadu Public Works Engineering Corporation Limited | | | | | | | | |
| 25 | Tamil Nadu Agro Engineering and Service Co-operative Federation Limited (AGROFED) | | | | | | 30 November 2004 | | |
| 26 | Tamil Nadu Coconut Farmers' Welfare Board | | | | | | | | |
| 27 | Tamil Nadu Co operative Oil Seeds Growers Federation Limited (TANCOF) | | | | | | | | | |
