| Htay Oo | |
| Native Name Lang: | my |
| Office: | Member of the House of Representatives |
| Constituency: | Hinthada Township |
| Majority: | 142,704 (81.09%)[1] |
| Term Start: | 31 January 2011 |
| Term End: | 29 January 2016 |
| Predecessor: | Constituency established |
| Order1: | Minister for Agriculture and Irrigation of Myanmar |
| Term Start1: | 18 September 2004 |
| Term End1: | 30 March 2011 |
| Order2: | Minister of Cooperatives |
| Term Start2: | 25 August 2003 |
| Term End2: | ? |
| Order3: | General Secretary of the |
| Office3: | Union Solidarity and Development Party |
| Term Start3: | 2 June 2010 |
| Term End3: | October 2012 |
| Predecessor3: | Position established |
| Successor3: | Maung Maung Thein |
| Order4: | Deputy Chairman of the |
| Office4: | Union Solidarity and Development Party |
| Term Start4: | October 2012 |
| Term End4: | August 2015 |
| Predecessor4: | Shwe Mann |
| Successor4: | Myat Hein |
| Party: | Union Solidarity and Development Party |
| Birth Date: | 20 January 1950 |
| Birth Place: | Henzada, Burma |
| Nationality: | Burmese |
| Spouse: | Ni Ni Win |
| Alma Mater: | University of YangonOfficer Training School, Myanmar |
| Branch: | Myanmar Army |
| Rank: | Major-General |
Htay Oo (Burmese: ဌေးဦး|htayy u; born 20 January 1950) is a Burmese former politician and military officer, and previously served as Pyithu Hluttaw MP for Hinthada constituency from 2011 to 2016. He also served as Minister for Agriculture and Irrigation of Myanmar from 18 September 2004 to 30 March 2011, and Minister for Cooperatives in 2003.[2] He was formerly a retired major general in the Myanmar Army.[3] Htay Oo was elected Deputy chairman of the Union Solidarity and Development Party, and served from October 2012 to August 2015. He was succeeded to Myat Hein in that role, and was then elected as the chairman of Party Central Leading Committee of the Union Solidarity and Development Party in August 2015.