Saint Augustine Chapel and Cemetery is a historic church on Dorchester Street between West Sixth and Tudor Streets in the South Boston neighborhood of Boston, Massachusetts. Built in 1818–19, it is the oldest Roman Catholic church building in Massachusetts; the cemetery, established 1818 is also the state's oldest Catholic cemetery. The Gothic Revival chapel was originally built as a crypt for the remains of Father François Matignon, the first Catholic priest to come to Boston from France. Father Dennis J. O'Donovan and many other priests are also buried there.
The chapel and cemetery were listed on the National Register of Historic Places in 1987. The chapel is still in active, holding 5pm Mass on Saturdays.
