Former Chelsea and Manchester United boss Mourinho has signed a contract until the end of the 2022-23 season.
Tottenham chairman Daniel Levy, announcing Mourinho’s arrival, said: “In Jose we have one of the most successful managers in football.
“He has a wealth of experience, can inspire teams and is a great tactician. He has won honours at every club he has coached.
“We believe he will bring energy and belief to the dressing room.”
Mourinho said: “I am excited to be joining a club with such a great heritage and such passionate supporters. The quality in both the squad and the academy excites me. Working with these players is what has attracted me.”