| Ananta Narayan Singh Deo | |
| Office: | Member of 9th Lok Sabha |
| Termend: | 13 March 1991 |
| Termstart: | 2 December 1989 |
| Termend1: | 17 February 1980 |
| Termstart1: | 13 February 1980 |
| Predecessor: | Somanath Rath |
| Successor: | Somanath Rath |
| Constituency: | Aska Lok Sabha constituency |
| Office1: | Leader of Opposition in Odisha Legislative Assembly |
| Predecessor1: | Prahalad Mallick |
| Successor1: | Sarat Kumar Dev |
| Birth Date: | 1929 9, df=y |
| Alma Mater: | St. Stephen's College, Delhi |
| Education: | Stewart School, Cuttack and The Doon School |
| Spouse: | Shanti Devi |
| Children: | Kishore Chandra Singh Deo |
| Relations: | Nandini Devi (daughter in law) |
Ananta Narayan Singh Deo (5 September 1929 – 1 December 2003) was an Indian ruler and politician who served as Member of 9th Lok Sabha from Aska Lok Sabha constituency,[1] 13th Leader of Opposition in Odisha Legislative Assembly from Surada Assembly constituency,[2] Deputy Minister for Industries, Commerce, Community Development and Panchayat Raj in Cabinet of Odisha[3] and Raja of Dharakote Estate.
Ananta Narayan Singh Deo was born on 5 September 1929.[4] He was educated in Stewart School, Cuttack and passed Senior Cambridge from The Doon School and was graduated from St. Stephen's College, Delhi in 1951.[5] He married Shanti Devi in April 1960.[6] His son is Kishore Chandra Singh Deo[7] and daughter in law is Nandini Devi.[8] [9] Deo died on 1 December 2003, at the age of 74.[10]
On 13 February 1980, he replaced Prahallad Mallick as Leader of the Opposition.[11] He was the runner up for 2000 Odisha Legislative Assembly election and 1980 Odisha Legislative Assembly election from Patnagarh Assembly constituency.[12]