Ou Ya Dav District () is a district in Ratanakiri Province, northeast Cambodia. In 2019, it had a recorded population of 29,932, an increase from 10,898 from 1998.
Categorized as a tropical savanna climate, the average temperature is about 75â¯ðF with March as the hottest month, at 86â¯ðF and the coldest being August, at 64â¯ðF. The average annual rainfall is about 93.1 inches. The wettest month is September, with about 17.9 inches of rain, and the driest is February, with about 0.1 inch.
The district contains 29 villages, which are located in seven communes.