N. Y. R. Ashley-Lassen
Born	(1934-03-29) 29 March 1934 (age 90) Port Harcourt, Nigeria
Allegiance	Ghana
Service / branch	Ghana Air Force
Years of service	? - 1974
Rank	Air Vice Marshall (Major General)
Commands	Chief of the Defence Staff Chief of Air Staff
Other work	Member of NRC government

Napoleon Yaovi Richard Ashley-Lassen (born 29 March 1934) was a Chief of the Defence Staff of the Ghana Armed Forces. He was also twice Chief of Air Staff of the Ghana Air Force. He was also a member of the National Redemption Council (NRC), formed after the overthrow of the Busia government in 1972.

Ashley-Lassen was born in Port Harcourt, Nigeria in 1934.^[1] He was commissioned into the Ghana Army. At one stage, he served as a pilot ferrying Ghanaian troops to and from the Democratic Republic of Congo during the United Nations peace keeping exercise there.^[2] He was appointed Chief of Air Staff in 1968 when the National Liberation Council military government was in power. He served a second brief term between December 1971 and January 1972.^[3] Following the overthrow of the Busia government on 13 January 1972, he was appointed as the Chief of the Defence Staff, a position he held until December 1974.^[4]

Following the 13 January 1972 coup d'état led by then Colonel Acheampong, he was appointed a member of the ruling National Redemption Council military government.^[5]