Allan or Alan Grant may refer to:

Alan Grant

• Alan Grant (American football) (born 1966), former American football cornerback
• Alan Grant (darts player) (born 1948), Australian former darts player
• Alan Grant (writer) (1949–2022), comic book writer
• Alan Grant (hurler) (born 1991), Northern Irish hurler
• A. K. Grant (1941–2000), New Zealand humorist

Allan Grant

• Allan Grant (1919–2008), American photojournalist
• Allan Grant (footballer) (born 1973), Scottish former footballer

Fictional

• Alan Grant, fictional Scotland Yard detective, from a series of mystery novels by Josephine Tey
• Dr. Alan Grant, a character from the Jurassic Park book and film franchise
• Alan Grant, a character from the 2012 Canadian horror movie American Mary
• Alan Grant, a character from the 2022 film The Whale, who served as Charlie's unseen deceased boyfriend