Trévani is a village located in Mayotte, an overseas department of France situated in the Indian Ocean. It functions as one of the constituent villages that make up the commune of Koungou.
Koungou serves as the second largest commune in Mayotte, following the capital city of Mamoudzou. In addition to Trévani, the commune is composed of five other villages: Majicavo Lamir, Majicavo Koropa, Kangani, and Longoni.