John Macurdy (né John Edward McCurdy, in Detroit, Michigan, on March 18, 1929) is an American operatic bass. Among his teachers was the contralto Elisabeth Wood, who was also the pedagogue of Norman Treigle.

John McCurdy may refer to:

John McCurdy is a professional baseball player who was drafted by the Oakland Athletics in the 1st round (26th) of the 2002 Major League Baseball draft out of the University of Maryland, College Park after he was a member of Beane's List.

John McCurdy (born 13 May 1960) is a former professional tennis player from Australia.

John McCurdy (1824 – 12 September 1885) was an Irish architect.