The Wales international, who joined Spurs from Southampton as a 17-year-old in May 2007, has been in sensational form for Harry Redknapp's side this season and has agreed a new deal tying him to White Hart Lane until 2014.
Spurs clinched their top-four place and Champions League qualification with a 1-0 win at Manchester City on Wednesday.
Bale can play at left-back or on the left wing and has been an integral member of the Spurs team which has broken into the top four this term. He has made 32 appearances, scoring two goals.
A statement on the club's official website, www.tottenhamhotspur.com, read: "The club is delighted to announce that Gareth Bale has signed a new four-year contract which runs until 2014.
"The Wales international joined the club as a 17-year-old from Southampton in May 2007 and has gone on to make 75 appearances in our colours, scoring five goals."
The 20-year-old scored winners against Arsenal and Chelsea last month and was named Barclays Premier League player of the month for April.
His displays have caught the attention and Bale was linked with a move to Manchester United as a long-term successor to Ryan Giggs.
But now he has committed his future to Spurs.
Bale made his Wales debut aged 16 years and 315 days against Trinidad and Tobago in May 2006 and has won 24 caps, scoring two goals.
Source: PA
Source: PA