Taivassalo (Finnish: [ˈtɑi̯ʋɑˌsːɑlo]; Swedish: Tövsala) is a municipality of Finland, about 50 kilometres (31 mi) from the city of Turku.

Its neighboring municipalities are Kustavi, Masku, Mynämäki, Naantali, Uusikaupunki and Vehmaa.

The medieval sailing ship appearing in the coat of arms of Taivassalo refers to the maritime connections the coastguard already had during the Northern Crusades, as well as to the medieval naval weaponry, the surviving information of which comes from Taivassalo itself.

The coat of arms was designed by Olof Eriksson, and the Taivassalo municipal council approved it at its meeting on October 21, 1953.

A. Lopmeri and Elias Lönnrot theorized that the initial word was originally taival/taipale, as the area was originally an island, by the time of the naming it may have been connected to the mainland by a thin isthmus (taipale) as a result of post-glacial rebound.