Plateau is one of the twelve departments of Benin. The department of Plateau was created in 1999 with an area of 2,835 square kilometres (1,095 sq mi) when it was split off from Ouémé Department. Plateau is subdivided into five communes, each centred at one of the principal towns: Adja-Ouèrè, Ifangni, Kétou, Pobè and Sakété.

Kétou is a Yoruba town, arrondissement, and commune located in the Plateau Department of the Republic of Benin. The commune covers an area of 2183 square kilometres and as of 2013 had a population of 156,497 people, making it the 13th largest settlement in Benin.