Sari Kärnä (born 2 April 1988) is a Finnish retired ice hockey player. She won a silver medal at the 2011 Winter Universiade and bronze medals at the IIHF World Women's Championships in 2015 and 2017 as a member of the Finnish national team. Her club career was played in the Naisten SM-sarja (renamed Naisten Liiga in 2017) with the Tampereen Ilves Naiset, Oulun Kärpät Naiset, and JYP Jyväskylä Naiset.