•
Lancelot Richardson (1895–1917), Australian military pilot •
LaTanya Richardson (born 1949), American actress and producer •
Laura Richardson (born 1962), American politician •
Lawrence Richardson (disambiguation), multiple people called Lawrence, Larry, or Laurence •
Leam Richardson, English footballer •
Leander Richardson (1856–1918), American journalist, playwright, theatrical writer and author •
Lee Richardson (disambiguation), multiple people •
Leigh Richardson (1924–2008), Honduran-born Belizean politician •
Len Richardson (disambiguation), multiple people •
Leon Richardson (born 1957), Antiguan cyclist •
Levi Richardson (1851–1879), American gunman, gambler and buffalo hunter •
Lewis Fry Richardson (1881–1953), English mathematician •
Lewis Richardson, English boxer •
Linsdall Richardson (1881–1967), British geologist •
Liza Richardson, American music supervisor •
Lloyd Richardson, Sint Maarten politician and physician •
Logan Richardson (born 1980), American musician •
Logan Richardson (boxer) (born 2000), English boxer •
Lorne Richardson (born 1950), Canadian Football League defensive back •
Louie Richardson (born 1985), professional Canadian football defensive end •
Louise Richardson, Irish academic, Principal of the
University of St Andrews •
Luke Richardson (born 1969), Canadian hockey player •
Lunsford Richardson (1854–1919), U.S. pharmacist •
Lyndel Richardson (born 1986), Anguillan cricketer •
Lynn Richardson, Canadian artist and sculptor •
Lyon Richardson (born 2000), American baseball player ==M==