Nordenstam is a surname of Scandinavian origin.
Notable people with the name include:
Bertil Nordenstam (born 1936), Swedish botanist Johan Mauritz Nordenstam (1802–1882), Finnish general and politician Sara Nordenstam (born 1983), Norwegian swimmer Stina Nordenstam (born 1969), Swedish singer-songwriter and producer Tore Nordenstam (born 1934), Swedish philosopher