John Heard may refer to:

• John Heard (actor) (1946–2017), American actor
• John Heard (basketball) (born 1939), Australian Olympic basketball player
• John Heard (musician) (born 1938), jazz bassist
• John T. Heard (1840–1927), American politician
• John W. Heard (1860–1922), American army general
• John Isaac Heard (1787–1862), Irish Member of the UK Parliament for Kinsale

• Johnny Herd (born 1989), English footballer
• John Hurd (1914–2001), fencer
• John Hurt (1940–2017), English actor