Lācis

no to be confused with the similar-sounding Greek surname Latsis

Lācis is a Latvian surname, which has migrated to other languages as well. It may refer to:

• Martin Latsis (1888—1938), Latvian-born Soviet politician, revolutionary and state security high officer
• Otto Latsis (1934-2005), Soviet and Russian journalist
• Vilis Lācis (1904-1966), popular author and Premier of Latvian SSR.