Saudi Arabian club Al-Nassr confirmed on Friday that they have officially signed Ronaldo as a free agent coming out of the World Cup.
Ronaldo has put pen to paper on a deal that runs through the 2024-25 season and is worth $75 million a year.
"History is in the making," Al-Nassr said in a published statement. Ronaldo completed his exit from Premier League Manchester United "by mutual consent" in November.
After taking a shot at manager Erik ten Hag and other aspects of the club during an interview with Piers Morgan published during the top flight's World Cup break.
The five-time Ballon d'Or winner, who reportedly wanted to leave United for the first time in the summer, is likely to have met with little or no interest from clubs.
In July, it was reported that Ronaldo had rejected an offer from an unnamed Saudi Arabian club who were reportedly willing to pay him €275m in wages over two seasons.
After the club submitted a €30m offer to sign the 37-year-old from United. While Ronaldo was cleared to train at Real Madrid's Valdebebas ground after Portugal crashed out of the World Cup.
Ronaldo is expected to wield significant authority when it comes to club decision-making and is likely to be used as an ambassador for Saudi Arabia's bid for the 2030 World Cup.