Leo Kunnas (born November 14, 1967) is an Estonian former military officer and a science fiction writer.

Kunnas was born in Kliima village, Võru Parish. After graduating from the Finnish National Defence Academy 1994, Kunnas was the commander of the Defence Forces Battle School (Meegomäe, Võru). He was also the first commander of the Estonian Military Academy 1997-1999 (located in Tallinn at that time).