Keith Johnson may refer to:

• Keith Johnson (cricket administrator) (1894–1972), Australian cricket administrator
• Keith Johnson (Australian politician) (1929–1995), Australian politician
• Keith Johnson (baseball) (born 1971), former professional baseball player
• Keith Johnson (cricketer) (born 1935), South African cricketer
• Keith Johnson (actor) (born 1953), African-American actor
• Keith Johnson (author) (born 1938), writer and software developer
• Keith Johnson (soccer) (born 1980), American Paralympic soccer player
• Keith Johnson (sailor) (1897-1960), Singaporean Olympic sailor
• Keith Johnson (applied linguist) (born 1944), British linguist
• Keith Johnson (phonetician), American linguist
• Keith Johnson (neurologist), American radiologist
• Keith Johnson (trade unionist), Canadian-American trade union leader
• Keith "Wonderboy" Johnson (born 1972), American gospel musician
• Keith Johnson (Idaho politician), Idaho state controller, 2002–2007
• Keith Johnson (trumpeter), trumpet player with The Butterfield Blues Band

• Keith Johnston (disambiguation)
• Keith Johnstone (born 1933), drama instructor