Per Lasson (April 18, 1859 — June 6, 1883) was a Norwegian composer.
He was the son of barrister Christian Lasson (1830–93) and Alexandra Cathrine Henriette von Munthe af Morgenstierne (1838–81).
His sisters included painter Oda Krohg (1860–1935) and cabaret singer Bokken Lasson (1871–1970).
His sister Alexandra married painter Frits Thaulow, and his sister Soffi married Danish poet Holger Drachmann.
[2] His musical compositions were modest in number, consisting of 15 songs and 9 piano pieces besides an orchestra overture.