Tom is a given name that can refer to:
- Tom, the landlord of The Leaky Cauldron
- Tom, one of Newt Scamander's pet Bowtruckles
- Tom, a Muggle who spraypainted his name in a pedestrian tunnel
- Tom Monk, the son of Dave and Tilly Monk, and twin of Jack Monk
- Tom Riddle Snr, the father of Tom Marvolo Riddle and son of Thomas Riddle
- Tom Marvolo Riddle, son of Tom Riddle Snr and Merope Gaunt, later known as Lord Voldemort
- Tom Wingrove, assistant vice president of Steen National Bank in 1926
Behind the scenes
Real-world individuals with the given name Tom include:
- Tom Attenborough, voiced Harry Potter in the video game adaptations of Harry Potter and the Chamber of Secrets and Harry Potter and the Prisoner of Azkaban
- Tom Felton, the actor who portrays Draco Malfoy in the Harry Potter films
- Tom Goodman-Hill, voiced Peter Pettigrew in the video game adaptations of Harry Potter and the Prisoner of Azkaban and Harry Potter and the Goblet of Fire
- Tom Hazeldine, provided the voice for a dragon handler in the video game adaptation of Harry Potter and the Goblet of Fire
- Tom Knight, portrayed Hermione Granger's father in the film adaptation of Harry Potter and the Chamber of Secrets
- Tom Moorcroft, is the actor who played the role of Regulus Arcturus Black in the film adaptation of Harry Potter and the Half-Blood Prince