| Honorific-Prefix: | Hon. |
| Chandrasiri Gajadeera | |
| Honorific-Suffix: | MP |
| Office: | Deputy Minister of Vocational Training |
| Term Start: | 2000 |
| Term End: | 2001 |
| Office2: | Deputy Minister of Housing & Construction Industry, Eastern Province Education & Irrigation Development |
| Office3: | Non-Cabinet Minister of Home Affairs |
| Term Start3: | 2007 |
| Term End3: | 2010 |
| Office4: | Deputy Minister of Finance & Planning |
| Term Start4: | 2010 |
| Term End4: | 12 January 2015 |
| Constituency Mp5: | Matara District |
| Parliament5: | Sri Lanka |
| Term Start5: | 2004 |
| Term End5: | 6 September 2019 |
| Term Start6: | 1994 |
| Term End6: | 2001 |
| Birth Date: | 26 February 1946 |
| Nationality: | Sri Lankan |
| Party: | Communist Party of Sri Lanka |
| Otherparty: | United People's Freedom Alliance |
| Residence: | C D 90 Gregorie's Road, Colombo 07 |
| Profession: | Attorney-at-Law |
Chandrasiri Gajadeera (26 February 1946 – 6 September 2019) [1] was a Sri Lankan politician,[2] a member of the Parliament of Sri Lanka and Minister of Rehabilitation[3] and Prisons.[4]