The 26-year-old has scored 11 times in 239 appearances for Spurs since joining from Sporting Lisbon in 2014.

"I am really happy to continue here and commit to this new journey we're on," he told Spurs TV.

"It's crazy to think that I have been here for six years now. I have enjoyed it a lot. It's a fantastic place to be."

Dier, who has been playing at centre-back lately having made his name as a defensive midfielder, arrived at White Hart Lane in the same summer as former manager Mauricio Pochettino.

He helped the north London club finish second in the Premier League during the 2016-17 campaign and last season's Champions League final.

"The club gave me my opportunity in England and it has given me so much since then," he said.

"We've had some great times together but I want to have even better times and I still feel there are a lot of things I need to achieve here before it's over."

Dier, who has made 23 appearances since Jose Mourinho succeeded Pochettino as manager in November, is eager to lift silverware with Spurs.

"My clear objective - and I think the manager's clear objective - is to try and win trophies for this club," he said.

"I feel with the manager and his record and his mentality towards winning trophies, that was a huge thing for me. When the day does come to leave this club, I want to leave knowing I have done that."

Australian Associated Press