Anderssen is a surname, and may refer to:
- Adolf Anderssen (1818–1879), German chess master
- Anderssen's Opening, chess opening
- Lena Anderssen (born 1974), Faroese-Canadian singer-songwriter
- Torgeir Anderssen-Rysst (1888–1958), Norwegian politician and Minister of Defense
- Romero Anton MontAlban Anderssen (born 1960), American author and high-IQ personality
