Walter Johnson (1887–1946) was an American baseball pitcher.
Walter Johnson may also refer to:
- Walter Johnson (defensive tackle) (1942–1999), American football player
- Walter Johnson (politician) (1917–2003), British Labour MP for Derby South from 1970 to 1983
- Walter Walford Johnson (1904–1987), American businessman and governor of Colorado
- Walter Johnson (historian) (born 1967), American academic historian
- Walter Johnson (linebacker) (born 1963), American football player
- Walter Johnson (academic) (1915–1985), American political scientist and historian
- Walter Robert Johnson (1927–1994), Canadian politician
- Walter S. Johnson (1884–1978), American businessman and philanthropist
- Walter J. Johnson (1611–1703), English explorer and fur trader
- Walter J. Johnson (aka Walter Jolowicz; 1908–1996), founder of Academic Press
- Walter A. Johnson (c. 1893–1958), American football and basketball coach and college athletics administrator
- Wally Johnson (1887–1962), Australian rules footballer