Skarstein is a surname. Notable people with the surname include:
Asbjørn Skarstein (1922–1999), Norwegian civil servant and diplomat Birgit Skarstein (born 1989), Norwegian competitive adaptive rower and para cross-country skier Inger-Lise Skarstein (born 1937), Norwegian politician Jakob Skarstein (1921–2021), Norwegian radio personality Rune Skarstein (born 1940), Norwegian economist Vigdis Moe Skarstein (born 1946), Norwegian librarian