James, Jamie, Jim, or Jimmy Kennedy may refer to:

Business

• James Gerard Kennedy Sr. (1907–1997), construction magnate
• James C. Kennedy (born 1948), billionaire; CEO and Chairman of the media conglomerate Cox Enterprises
• Jim Kennedy (media executive), American media executive

Entertainment

• Jimmy Kennedy (1902–1984), Irish songwriter, "Istanbul (Not Constantinople)", "Teddy Bears' Picnic", "The Hokey Pokey"
• Jamie Kennedy (born 1970), American comedian and actor
• Jamie DeWolf (born 1977), American poet-comedian whose birth name is Jamie Kennedy
• James Kennedy, author of The Order of Odd-Fish
• James Kennedy, cast member on Vanderpump Rules
• James Kennedy (musician) (born 1980), Welsh musical artist

Politics

• James Buckham Kennedy (1844–1930), Canadian lumberman and Liberal politician
• James Kennedy (congressman) (1853–1928), U.S. congressman from Ohio, 1903–1911
• James Kennedy (Canadian politician) (1869–1915), merchant and political figure in Prince Edward Island, Canada
• James Kennedy (Australian politician) (1882–1954), Australian politician and footballer
• James Kennedy (Irish politician) (1909–1968), TD for Wexford, 1965–1968
• James Kennedy (New Hampshire politician) (born 1945), New Hampshire state representative, 2006–present
• James J. Kennedy (born 1953), mayor of Rahway, New Jersey
• James Kennedy (British politician), British Member of Parliament for Tiverton

Sports

• Jim Kennedy (Australian footballer) (1908–1980), Australian rules footballer
• Jimmy Kennedy (footballer) (1883–1947), Scottish footballer
• Jim Kennedy (footballer, born 1934) (1934–2003), Scottish footballer (Celtic FC, Greenock Morton FC, Scotland)
• Jimmy Kennedy (rugby league), rugby league footballer of the 1910s and 1920s for Hull F.C.
• Jimmy Kennedy (American football) (born 1979), professional American football player
• Jimmy Kennedy (hurler, born 1891) (1891–1973), Irish hurler, Carrigtwohill GAA, Cork GAA
• Jimmy Kennedy (hurler, born 1926) (1926–2007), Irish hurler for Tipperary and Dublin
• Jim Kennedy (manager) (1862–1904), Major League Baseball manager, Brooklyn Gladiators, 1890
• Jim Kennedy (infielder) (born 1946), Major League Baseball player for the St. Louis Cardinals
• Jim Kennedy (cricketer) (1932–2007), English cricketer
• James Kennedy (cricketer) (1949–2020), Scottish cricketer and gynaecologist
• J. Walter Kennedy (1912–1977), commissioner of the National Basketball Association
• Jamie Kennedy (ice hockey) (born 1946), Canadian hockey player, World Hockey Association
• Jimmy Kennedy (wrestler) (born 1988), American wrestler
• James "Radio" Kennedy (1946–2019), American football fixture

Other

• James Kennedy (bishop) (1408–1465), Bishop of Dunkeld and St Andrews
• James Shaw Kennedy (1788–1865), British General and military writer, Knight Commander, Order of the Bath
• James Kennedy (engineer) (1797–1886), British locomotive engineer
• James Kennedy (social psychologist) (born 1950), American social psychologist, originator of particle swarm optimization
• James Kennedy (historian) (born 1963), American historian, professor, University of Amsterdam
• James Kennedy (security guard) (1930–1973), Scottish security guard, posthumously awarded the George Cross
• D. James Kennedy (1930–2007), televangelist; founder Coral Ridge Presbyterian Church, Fort Lauderdale, Florida
• William James Kennedy, known as Jim Kennedy, British geologist and museum director
• Jamie Kennedy (chef), Canadian chef
• James Kennedy (priest), Irish Anglican priest
• James Mackintosh Kennedy (1848–1922), Scottish-American poet, editor, and engineer
• James P. Kennedy Jr., American attorney
• James 'Jibs' Kennedy, guitarist and backing vocalist of Oceans Ate Alaska