Lammi
![Coat of arms](/Images/godic/202501/23/Image-Lammi_vaakuna5940.jpg")
![Location of Lammi in Finland](/Images/godic/202501/23/Lammi.sijainti.suomi.2008.svg5940.png")
![Lammi Church was built between 1490 and 1510 and was dedicated to St. Catherine of Alexandria.](/Images/godic/202501/23/Lammi_Church5940.JPG")
Lammi (Swedish:Lampis) is a former municipality of Finland. It was consolidated with Hämeenlinna on 2009-01-01.
It is located in the province of Southern Finland and is part of the Tavastia Proper region. The municipality had a population of 5,507 (2008) and covered an area of 611.24 km² of which 73.69 km² is water. The population density is 11 inhabitants per km².