Adam Johnson may refer to:

• Adam Johnson (baseball) (born 1979), American baseball player
• Adam Johnson (British conductor), British classical pianist and conductor
• Adam Johnson (Canadian conductor), Canadian classical conductor
• Adam Johnson (cricketer) (born 1978), English cricketer
• Adam Johnson (footballer) (born 1987), English footballer and convicted sex offender
• Adam Johnson (ice hockey) (1994–2023), American ice hockey player
• Adam Johnson (musician) (born 1976), American musician, sound designer and visual artist
• Adam Johnson (writer) (born 1967), American author
• Adam Christian Johnson, American Capitol rioter
• Adam R. Johnson, state congressman in the Arkansas House of Representatives
• Stovepipe Johnson (Adam Rankin Johnson, 1834–1922), brigadier general of the Confederate States of America