James or Jim Barnett may refer to:
Politicians Jim Barnett (Kansas politician) (born 1954), American politician Jim Barnett (Mississippi politician) (1926–2013), American physician and politician James Barnett (MP) (c. 1760–1836), English politician, MP for Rochester James Barnett (New York politician) (1810–1874), New York politician in Madison County, New York James R. Barnett (1842–1917), Wisconsin politician
Others James Barnett (entrepreneur) (born 1986), American entrepreneur and community activist James V. Barnett II, American engineer James Rennie Barnett (1864–1965), Scottish naval architect Jim Barnett (basketball) (born 1944), American basketball player and commentator Jim Barnett (wrestling) (1924–2004), American professional wrestling promoter James Barnett (writer), American television writer and the co-creator of the television show F Troop
See also James Barnet (1827–1904), Australian architect