William M. Feehan (September 29, 1929 – September 11, 2001) was a member of the Fire Department of New York who died during the collapse of the World Trade Center during the September 11 attacks.
Feehan graduated from Saint John's University in 1952. Before his appointment to the FDNY, he served in the United States Army in Korea during the Korean War, during which he was decorated with the Combat Infantry Badge, Korean Service Medal, UN Service Medal and National Defense Service Medal.
Feehan held every rank within the fire department, starting with Probationary Firefighter upon his appointment on October 10, 1959, and was the first firefighter to do so. He was promoted to Lieutenant in 1964 and eventually to Chief of Department in 1991. In 1992, he was appointed Deputy Fire Commissioner. Upon the resignation of Fire Commissioner Carlos M. Rivera, he briefly served as Acting Fire Commissioner through the end of Mayor David N. Dinkins administration from August 31, 1993 until December 31, 1993.
After incoming Mayor Rudolph W. Giuliani picked Howard Safir to become Fire Commissioner of the City of New York, Feehan returned to his previous position of First Deputy Fire Commissioner of the City of New York. Although high-ranking members of the FDNY and other city departments ordinarily are asked to step aside for incoming mayors to make their own appointments, according to an FDNY spokesman, nobody even thought of asking Feehan to do so, because he was so knowledgeable that he "was thought to know the location of every fire hydrant in the city." He served in that position until his death in the line of duty during the collapse of the North Tower of the World Trade Center on September 11, 2001, at the age of 71. Along with FDNY Chief of department Peter Ganci, Commissioner Feehan was found by the FDNY's Search and Rescue K-9 "Bear."