Pétursdóttir is a surname. Notable people with the surname include:
Anna-Lind Pétursdóttir, Icelandic professor Bryndís Pétursdóttir (1928–2020), Icelandic actress Lilja Pétursdóttir (born 2004), Icelandic model Linda Pétursdóttir (born 1969), Icelandic businesswoman Sólveig Pétursdóttir (born 1952), Icelandic politician