Acton Bjørn (23 September 1910 – 20 June 1992) was a Danish architect and designer.

Bjørn was born on 23 September 1910 in Copenhagen, the son of building painter Ove B.

He studied at the Technical Society's School and attended the Royal Danish Academy of Fine Arts from 1931 to 1933.

From 1933 until 1934 he worked on Blidah, a housing development in Hellerup, in collaboration with Ivar Bentsen and Jørgen Berg.

In 1949, together with Sigvard Bernadotte, he established Scandinavia's first industrial design practice.