The Portugal captain is a free agent after leaving Manchester United following a controversial interview in which he criticised the club.
Cristiano Ronaldo has joined Saudi Arabian side Al Nassr on a deal that runs until 2025. Ronaldo will reportedly receive the biggest football salary in history at more than £177m per year.
The 37-year-old Ronaldo says he is "eager to experience a new football league in a different country".
Ronaldo added: "I am fortunate that I have won everything I set out to win in European football and feel now that this is the right moment to share my experience in Asia."
Al Nassr - nine-time Saudi Pro League champions - described the signing of Chritiano Ronaldo as "history in the making".
The club said it would "inspire our league, nation and future generations, boys and girls to be the best version of themselves".
In the summer, Ronaldo turned down a £305m deal to join another Saudi team - Al Hilal - because he was happy at United.
Ronaldo, who scored 145 goals in 346 appearances for United, left Juventus to rejoin the Old Trafford club in August 2021 - 11 years after he departed to join Real Madrid.