William Patrick Maher (born June 25, 1946) is an American rower who competed in the 1968 Summer Olympics, winning a bronze medal in the men's double sculls.

He was also in the DBC Intermediate Eight that won the U.S. National title that year with Tom Vigliotti, Dan Kocis, Frank Housen, Dave Mix, Lu Curl, Jay Ambrosini, and Derek Hughes.

There, he was down by two lengths at the 1,000 meter mark before he pressed on to a photo finish, beating Donald Spero, the best American single sculler, by a margin of inches.

He was still sent to the World Rowing Championships in Bled, Yugoslavia as a spare for Don Spero, but was entered in the fours with coxswain event with a crew that was put together at the last moment and they placed 6th.

In 1969, now rowing for the US Army out of Vesper Boat Club, he was sent by Jack Kelly, Jr. to race in the Diamond Sculls at the Henley Royal Regatta in England where he made it to the semifinals.