John Bradley may refer to:

• J. Robert Bradley (1919–2007), American gospel singer
• John Bradley (American actor) (born 1960), American television actor
• John Bradley (English actor) (born 1988), British actor from Game of Thrones

• Jack Bradley (baseball) (1893–1969), American baseball player
• Jack Bradley (footballer) (1916–2002), English footballer
• John Bradley (Australian footballer) (born 1943), Australian rules footballer for Footscray
• John Bradley (drag racer) (1925–2012), American drag racer and land speed racer

• Jack T. Bradley (1918–2000), United States Army Air Forces pilot
• John Bradley (RAF officer) (1888–1982)
• John Bradley (United States Navy) (1923–1994), Navy Cross recipient, WW II, flag raiser Iwo Jima
• John A. Bradley (born c. 1945), United States Air Force lieutenant general
• John Jewsbury Bradley (1869–1948), United States Army officer

• John Bradley (ironmaster) (1769–1816), English industrialist who set up the Stourbridge Ironworks
• John Bradley (d. 1844) (1787–1844), British artist and drawing-master to the Brontës
• John Bradley (artist) (fl. 1830–1840), British-American artist
• John Bradley (Wisconsin politician) (1817–1902), Republican member of the Wisconsin State Assembly
• John Bradley (bishop), 16th-century English bishop
• John Bradley (doctor) (1917–2004), Canadian doctor
• John Bradley (Australian politician) (1844–1900), Australian politician
• John Courtland Bradley (1887–1964), physician and politician in Ontario, Canada
• John E. Bradley (born 1971), Democratic member of the Illinois House of Representatives
• John J. Bradley (1831–1891), New York politician
• John R. Bradley (born 1970), British author and journalist
• John Bradley (historian) (1954–2014), Irish historian

• Jon Bradley (born 1981), American football player
• John Bradley & Co, proprietors of the Stourbridge ironworks