No, Harry Potter and Tom Riddle are not brothers. However, they are distant cousins, Voldemort (Tom Riddle) to the Gaunts and Harry to the Potters, which were related families at one time. Harry's got a part of Voldemort's soul attached to his own, as well.
tom marvolo riddle
Harry Potter's arch enemy is Lord Voldemort. Voldemort's real name is Tom Marvolo Riddle.
Marvolo Gaunt was a pure-blood wizard and descendant of Salazar Slytherin. He was the maternal grandfather of Tom Marvolo Riddle,
Christian Coulson played young Tom Marvolo Riddle in Harry Potter and the Chamber of Secrets.
Tom Marvolo Riddle, aka Lord Voldemort
Lord Voldemort or Tom Marvolo Riddle.
Harry discovered that Lord Voldemort's real name is Tom Marvolo Riddle.
Tom Marvolo Riddle is his real name, although he is better known as Lord Voldemort.
Tom Marvolo Riddle is his real name. Lord Voldemort is the name he choose.
The main antagonist of the Harry Potter Series is Lord Voldemort aka The Dark Lord, He-Who-Must-Not-Be-Named, You-Know-Who, and Tom Marvolo Riddle.
The character of Lord Voldemort, from the Harry Potter series, originally had the name of Tom Marvolo Riddle.
The English actor Christian Coulson played the teenage version of Tom Marvolo Riddle in Harry Potter and the Chamber of Secrets.