The 31-year-old is one of the club's longest serving players, having joined from Ajax in 2012.
However, despite currently nursing a thigh injury, Vertonghen has been as good as ever this season, and is one of the most consistent centre backs in Europe this decade.
A cultured Belgian international who reads the game well and plays out from the back, the news of Vertonghen's extension has been met with delight from Spurs fans.
The former Ajax star is a fan favourite at the North London club due to his consistency and classy performances during his career so far at Tottenham.
The defender is currently out of action for the next couple of weeks with a thigh injury.
Fans took to Twitter to react to the positive news...
Vertonghen’s new contract is like a new signing. Great news— We Are THFC (@WeAreTHFC1) December 18, 2018
@1MickyHazard Have you heard the biggest Footballing story of today Micky...………..Jan Vertonghen has signed a new deal !!!!— ALEX (@Totts62) December 18, 2018
Vertonghen— Rodri (@rodricl11) December 18, 2018
Thank you Jan Vertonghen— El Tel Hotspur (@ElHotspur) December 18, 2018
Now let's get him fit; at 31, his injury record this season is concerning. There are very few in the world better when Vertonghen is fit and playing. https://t.co/rsI2KlQquy— B P Smyth (@BenSmyth94) December 18, 2018
Have something to tell us about this article?