Major General Bo Erik Siwer Waldemarsson (born 28 November 1949) is a retired officer of the Swedish Air Force.

[3] Waldemarsson was commissioned as an officer after graduating from the Royal Swedish Air Force Academy (Flygvapnets krigsskola, F 20) in 1973[4] and he was appointed lieutenant the same year at the Kalmar Wing, where he served from 1973 to 1976.

Waldemarsson served as head of the Planning Department in the Defence Staff from 1985 to 1986 and was combat control commander at the Blekinge Wing from 1986 to 1989.

Waldemarsson was appointed with lieutenant colonel with special position (Överstelöjtnant med särskild tjänsteställning) and was Director, Short Term Planning Department[5] from 1991 to 1994.

He served as Chief of Staff of the Central Air Command from 1995 to 1996 and attended the Main Course and Management Course at the Swedish National Defence College in 1996 and in 1997.