Warren Martin Hern (born 1938) is an American physician best known for performing late terminations of pregnancy.
After his position was eliminated, Hern entered into private practice, creating the Boulder Abortion Clinic in 1975.
[2][3] On January 22 in 2025, on the fiftieth anniversary of opening his own private clinic, Hern retired from practicing medicine.
[6] Hern's clinic has been the target of numerous vandalisms and threats, including gunshots fired through his office window.
[9][10] Hern expressed outrage over the May 31, 2009 killing of George Tiller, a doctor who offered similar services, in Wichita.