Lee, 26, won the 10-metre synchro title with teammate Tom Daley at the Tokyo Olympics in 2021 and also claimed medals at world, European and Commonwealth level.
“To my fans and followers, thank you for your unwavering support, through every dive, every challenge, every triumph.
OLYMPIC champion Matty Lee has retired from diving because he “doesn’t want to be a broken man” anymore.
Since then Daley, 30, has retired from the sport and their shared coach Jane Figueiredo has left the British Aquatics system.
Writing on Instagram, Lee said: “After 20 years in the sport, it’s time for me to step away from diving.