William Francis Denehy
- Bats Both, Throws Right
- Height 6' 3", Weight 200 lb.
- High School Middletown Woodrow Wilson High School
- Debut April 16, 1967
- Final Game September 19, 1971
- Born March 31, 1946 in Middletown, CT USA
Bill Denehy was the coach of the University of Hartford from 1985 to 1987, being fired for "derogatory public comments".
In his major league debut with the New York Mets on April 16, 1967, he struck out 9 batters to set a franchise record for a debut, matching the total collected by Tom Seaver only three days earlier. That mark would hold for 45 years, until July 26, 2012, when Matt Harvey fanned 11 in his major league debut with the Mets.