Sēja Municipality () was a former municipality in Vidzeme, Latvia. The municipality was formed in 2006 by reorganization of Sēja Parish; the administrative centre being Loja. The population in 2020 was 2,156.
On 1 July 2021, Sēja Municipality ceased to exist and its territory was merged into Saulkrasti Municipality as Sēja Parish.
See also Administrative divisions of Latvia (2009)
References