J
- John M. Jackson (born 1950) actor, JAG
- Lisa Jackson (born 1962), current Administrator of the Environmental Protection Agency
- Mahalia Jackson (1911–1972) gospel singer
- Shelby M. Jackson (1903–1972) state education superintendent from 1948 to 1964
- Randy Jackson (born 1956), running back Television personality
- Brandon Jacobs (born 1982), running back for the San Francisco 49ers
- Bradie James (born 1981), linebacker for the Dallas Cowboys
- Antawn Jamison (born 1976), power forward for the Cleveland Cavaliers
- Rajarsi Janakananda (1892–1955) former president of the Self-Realization Fellowship
- Eddie Jemison (born ???), actor, Hung, Bruce Almighty, Ocean's Eleven and its sequels
- Mykel Shannon Jenkins (born 1969), actor, The Bold and the Beautiful
- Woody Jenkins (born 1947) politician
- Bobby Jindal (born 1971) current governor of Louisiana
- Ronnie Johns (born 1949) politician
- Andrew R. Johnson (1856–1933) state senator and mayor of Homer; named Ashland, Louisiana
- Avery Johnson (born 1965), head coach of the New Jersey Nets and retired NBA point guard
- Bill Johnson (1872–1972) jazz musician
- Neal Lane "Lanny" Johnson (born 1940) school superintendent, former state representative
- Quinn Johnson (born 1986), fullback for the Green Bay Packers
- John Bennett Johnston, Jr. (born 1932), U.S. Senator (1972–1997); lobbyist, since 1997; state senator, 1968–1972; state representative, 1964–1968
- Bert Jones (born 1951) LSU Tigers & Baltimore Colts quarterback
- Chad Jones (born 1988), safety for the New York Giants
- Dub Jones (born 1924), former NFL and AAFC running back
- Edgar Jones (born 1984) linebacker and tight end for the Baltimore Ravens
- Howard M. Jones (1900–1980) politician
- Jacoby Jones (born 1984), wide receiver for the Houston Texans
- Ralph Waldo Emerson Jones (1905–1982), president and baseball coach at Grambling State University from 1936 to 1977
- Robert Gambrell "Bob" Jones (born 1939) politician, businessman
- Sam Houston Jones (1897–1978) Governor of Louisiana
- Henderson Jordan (1896–1958), Bienville Parish sheriff who was part of the posse that ambushed Bonnie and Clyde
- J. Lomax Jordan (born 1952) state senator from Lafayette, 1992–2000
- Juvenile (born 1975) rapper
Read more about this topic: List Of People From Louisiana