Chalfont is a borough with home rule status in Bucks County, Pennsylvania, United States. The population was 4,009 at the 2010 census. The borough is served by SEPTA Regional Rail's Lansdale/Doylestown Line at Chalfont station.

Chalfont St Giles is a village and civil parish in southeast Buckinghamshire, England. It is in a group of villages called The Chalfonts, which also includes Chalfont St Peter and Little Chalfont.