The 50-year-old author shared the news with her 5.46 million Twitter followers that the 't' in the name is actually silent, reported CNN.
Rowling retweeted a tweet from one of her followers in which they shared a piece of Harry Potter trivia. Namely, the 't' in Voldemort should actually be silent.
Rowling confirmed this was actually the case, further stating that she believes she is the only person to actually pronounce it correctly.
Another follower pointed out that the name Voldemort actually derives from the French 'vol de mor' meaning 'flight of death'.
Earlier this week, Rowling announced this was the age of Hufflepuff House. Newton 'Newt' Scamander, the character Eddie Redmayne is set to play in the upcoming "Fantastic Beasts and Where to Find Them" film, was a member of Hufflepuff House.
The upcoming film, set in New York in the 1960s, is due to be released on November 18, 2016 in the UK and US.