Osmaniye Province (Turkish: Osmaniye ili) is a Turkish province located in southern Turkey. It became a province in 1996. The province was part of Adana Province. It covers an area of 3,767 km² and has a population of 479,221 (2010 est). The province is situated in Çukurova, a geographical, economical and cultural region.
The capital of the province is Osmaniye (Population: 194,000). The next largest towns are Kadirli (Population: 83,618) and Düziçi (Population: 42,000).