The new deal will keep the 29-year-old centre-half at White Hart Lane until the summer of 2016.
Dawson joined Tottenham from Nottingham Forest in January 2005, in a join £8million deal with Andy Reid.
The England centre-back has made 293 appearances and scored 10 goals for the club.
Dawson came close to joining Queens Park Rangers in August 2012 after Andre Villas-Boas took over as Spurs boss.
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Liverpool have unveiled their new home kit for next season, sticking with the hugely popular retro styling of the current shirt.
The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.