William Moore McCulloch (November 24, 1901 – February 22, 1980) was an American lawyer and politician who served as a Republican U.S. Representative for Ohio's 4th congressional district from 1947 to 1973.

[1] During his time in office, the 4th Ohio Congressional District included the counties of Allen, Hardin, Mercer, Auglaize, Darke, Shelby, Miami, Preble and a part of Montgomery and he won 65-70 percent of the votes in each election.

[2] As the ranking member of the House of Representatives Judiciary Committee, William McCulloch took a leading role in the civil rights movement.

McCulloch's influence with the Civil Rights Act led President John F. Kennedy to declare, "Without him it can't be done."

[3] In 1971, Jacqueline Kennedy Onassis wrote a letter to McCulloch, crediting him as being one of the most important people for the civil rights legislation in the 60s.

[18] He was not a candidate for re-election in the 1972 election to the Ninety-third Congress and instead resumed the practice of law in Piqua, Ohio.

[22] In early 2010, McCulloch was proposed by the Ohio Historical Society as a finalist in a statewide vote for inclusion in Statuary Hall at the United States Capitol.

McCulloch was the subject of the JFK Profiles in Courage 2017 winning essay by student Daud Shad.

Representative Thomas Railsback (R-IL) credited McCulloch as doing more for civil rights than any other member of the House, along with his friend Emmanuel Celler.