Osmaniye is an electoral district of the Grand National Assembly of Turkey. It elects 4 members of parliament (deputies) to represent the province of the same name for a four-year term by the D'Hondt method, a party-list proportional representation system.
Population reviews of each electoral district are conducted before each general election, which can lead to certain districts being granted a smaller or greater number of parliamentary seats. Osmaniye became a province in 1996 and first directly elected members to parliament in the 1999 general election. It has always sent four members to Ankara.
Osmaniye is the home town and parliamentary seat of the Nationalist Movement Party, Devlet Bahçeli.