Walter Palmer may refer to:
- Walter Palmer (basketball) (born 1968), American former basketball player
- Walter Palmer (Puritan) (1585–1661), early Separatist Puritan settler in the Massachusetts Bay Colony
- Walter Launt Palmer, American Impressionist painter
- Walter D. Palmer, American politician from New York
- Sir Walter Palmer, 1st Baronet (1858–1910), British biscuit manufacturer and Conservative politician
- Walter Palmer (born 1960), American big-game hunter and dentist notable for the killing of Cecil the lion
- Walter Palmer (rugby league), Australian rugby league player