- Language: Lagwan
- Alternate names: Logone, Lagwan Kotoko, Kotoko-Logone, Logone-Birni Kotoko, Lagwane, Lagouane
- Language code: kot
- Language family: Afro-Asiatic, Chadic, Biu-Mandara, B, B.1, Kotoko Proper, South (SIL classification)
- Number of speakers: 10,000
- Vulnerability: Vulnerable
- Script: Latin script.
The term Mandage is used by the Kotoko to refer to either the northern group of Kotoko languages (Mpade, Afade, Maslam, Malgbe) or the Kotoko group as a whole (including Mser and Lagwan). Muslim.
Lagwan is spoken in Nigeria, Cameroon, Chad, Africa.