Pöysti is a Finnish surname. Notable people with the surname include: Lasse Pöysti (1927–2019), Finnish actor, director, theatre manager and writer. Toini Pöysti (born 1933), Finnish cross-country skier. Erik Pöysti (born 1955), a Finnish film director and actor; son of Lasse Pöysti. Alma Pöysti (born 1981), a Swedo-Finnish film director and actress; daughter of Erik Pöysti and granddaughter of Lasse Pöysti. Eetu Pöysti (born 1989), Finnish professional ice hockey forward
https://en.wikipedia.org/wiki/P%C3%B6ysti