Rosenlewin Urheilijat-38 (Finnish for Rosenlew Athletes-38) was a sports club owned by the Rosenlew factories.

The club was formed in 1938 but the hockey team was formed in the 1950s.

RU-38 won the Finnish Championships in ice hockey in 1967 and the Finnish Cup in 1965.

[1] RU-38 got merged with Porin Karhut in 1967 to form Porin Ässät.

[3] In 1967 RU-38 participated in a movie called Billion Dollar Brain by performing a hockey fight with Karhu-Kissat.