The Brazilian forward signed from Club Brugge in February 2024 and has overcome a knee injury to score 17 Premier League goals this season.
"I love the club and the people in the club," Thiago said. "It’s been a great season for us."
Igor Thiago extends Tottenham deal until 2031
Brentford striker Igor Thiago has signed a new contract with Tottenham, committing his future to the club until 2031.