Riitta Liisa Salin, née Hagman, (16 October 1950) is a retired Finnish sprinter who specialized in the 400 metres.
She won the gold medal in 1974 European Athletics Championships with a new world record time 50.14, which remains the Finnish record. At the 1976 Summer Olympics Salin finished seventh.
Her brother is former ice hockey player Matti Hagman.