James, Jim or Jimmy Sullivan may refer to:

• James Sullivan (1981–2009), or The Rev, Avenged Sevenfold drummer
• Jim Sullivan (musician) (1939–1975?), American singer-songwriter who disappeared in New Mexico
• Big Jim Sullivan (1941–2012), English guitarist
• Jim Sullivan (writer) (born 1978), English comedy writer
• Jim Sullivan, sculptor of the Babe Ruth Home Run Award

• James Sullivan (governor) (1744–1808), governor of Massachusetts, 1807–08
• James Mark Sullivan (1873–1935), American lawyer and diplomat
• James Sullivan (city manager) (1925–2012), American city manager
• Jim Sullivan (Wisconsin politician) (born 1967), state senator for Wisconsin's 5th Senate district
• Jim Sullivan (Irish republican) (died 1992), member of the Official IRA in Belfast at time of outbreak of Northern Ireland troubles
• Jimmy Sullivan (Queensland politician), Queensland, Australia politician
• James Sullivan (Victorian politician), Victoria, Australia politician (1817-1876)
• James P. Sullivan (judge), Texas Supreme Court Justice (2025-)

• James Edward Sullivan (1862–1914), American Olympic official
• James Sullivan (athlete) (1885–1965), American Olympic athlete in 1906 and 1908
• Jim Sullivan (boxer) (1886–1949), British boxer
• Jimmy Sullivan (footballer) (1896–1983), Victorian Football League player
• Jim Sullivan (rugby, born 1903) (1903–1977), Welsh rugby league player
• Jim Sullivan (Australian footballer) (born 1942), former Australian rules footballer
• Jim Sullivan (Australian rugby league) (fl. 1950s), Australian rugby league player
• Jim Sullivan (English footballer) (1904–1974), English association footballer
• Jim Sullivan (1920s pitcher) (1894–1972), Major League baseball pitcher, 1921–1923
• Jim Sullivan (1890s pitcher) (1867–1901), Major League baseball pitcher, 1891–1898
• Jim Sullivan (curler) (1968–2011), Canadian curler

• James Sullivan (Medal of Honor) (1828–1918), American soldier, real name Peter Van Hoesen
• James F. Sullivan (1857–1917), American sailor and Medal of Honor recipient
• James W. Sullivan (1909–1974), American art director
• James Stephen Sullivan (1929–2006), American prelate of the Roman Catholic Church
• L. James Sullivan (born 1933), American firearms inventor
• James J. Sullivan, American lawyer specializing in occupational safety and health law
• James P. Sullivan, fictional protagonist of the Monsters Inc. franchise