thumb|right|105px|Coat of arms of Kullaa
thumb|upright|Kullaa Church
Kullaa is a former municipality of Finland. It joined Ulvila on 1 January 2005. It is located in the province of Western Finland and is part of the Satakunta region.
The municipality had a population of 1,601 (2003) and covered an area of 283.19 km² of which 19.46 km² is water. The population density was 5.7 inhabitants per km². The municipality was unilingually Finnish.
People born in Kullaa
- Sofia Hjulgrén (1875–1918)
- Kaarlo Kangasniemi (1941–)
- Kauko Kangasniemi (1942–2013)
- Hannele Ruohola-Baker (1959–)