McCullum is the surname of several people:
Brendon McCullum (born 1981), New Zealand cricketer, brother of Nathan, son of StuartJulito McCullum (born 1990), American film and television actor and rapperMac McCullum, a character in the Left Behind Christian novel seriesNathan McCullum (born 1980), New Zealand cricketer, brother of Brendon, son of StuartRobert McCullum (born 1954), American collegiate basketball coachSam McCullum (born 1952), American football wide receiverStuart McCullum (born 1956), New Zealand cricketerDonna Culver Krebbs, a character in the American television series Dallas, née Donna McCullumMelinda O'Hearn, American actress, professional wrestler, and model, née Melina McCullum