Sky Sports News understood Mourinho has left less than a week ahead of Sunday’s Carabao Cup final against Manchester City on Sunday.
Mourinho had been in charge at Spurs since November 2019, replacing Mauricio Pochettino, signing a deal until the end of the 2023 season.
In his first campaign, Mourinho took Tottenham from 14th in the Premier League to finish sixth – securing Europa League qualification – but were knocked out of the Champions League at the last-16 stage by RB Leipzig.
Spurs are currently seventh in the table, five points off the Champions League places.