Isa Rahunen (born 16 April 1993 in Kuopio) is a Finnish ice hockey player who currently plays with Oulun Kärpät and the Finnish national team.
While representing Finland in international competition she won a silver medal at the 2019 IIHF Women's World Championship and bronze medals at the 2018 Winter Olympic Games and the 2017 IIHF Women's World Championship.