| N. Y. R. Ashley-Lassen | |
| Birth Date: | 29 March 1934 |
| Birth Place: | Port Harcourt, Nigeria |
| Allegiance: |  Ghana |
| Serviceyears: | ? - 1974 |
| Rank: | Air Vice Marshall (Major General) |
| Laterwork: | 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]