Pétursson is a surname of Icelandic origin, meaning son of Pétur (Peter). In Icelandic names, the name is not strictly a surname, but a patronymic. The name refers to:
Guðmundur Pétursson (b. 1986), Icelandic football player
Gunnar Pétursson (b. 1930), Icelandic Olympic cross-country skier
Hallgrímur Pétursson (1614–1674), Icelandic pastor and poet
Johann K. Petursson (b. 1913, unknown if still living), Icelandic performer known as “The Viking Giant”
Oddur Pétursson (b. 1931), Icelandic Olympic cross-country skier
Óskar Pétursson (b. 1989), Icelandic professional football player playing for England
Pétur Pétursson (b. 1959), Icelandic professional football player
Philip Petursson (1902–1988), Canadian politician from Manitoba; provincial legislator 1966–77