Faulstich is a surname. Notable people with the surname include:
Edith Margaret Faulstich (1907–1972), American philatelist and philatelic journalist Gerhard Faulstich, German baritone Marga Faulstich (1915–1998), German glass chemist Martin Faulstich (born 1957), German research scientist (1837–??) (1946–2016) (1946–2019)