Playing in the semifinals of the 2012 Olympics
Lee started the Olympic year with the first Super Series tournament of the season, the Korea Open. In a repeat of the previous year's final, he avenged his loss to Lin Dan by defeating him in three sets. A week later, he captured his fifth straight and eighth Malaysia Open title, thus equalling the number of home titles held by Wong Peng Soon who won them between 1940 and 1953.

In March, Lee lost in the All England Open when he bowed out in the second game after receiving medical help on three occasions. This also dashed Lee's hopes of becoming the first man to win three successive All England Open titles. In April, he was defeated by South Korean Shon Wan-ho in the final of the India Open, but retained his Malaysia Open Grand Prix Gold title for the fourth time in a row in May. Lee was out for three to four weeks after suffering an ankle injury during the Thomas Cup Group C tie against Denmark.

Lee returned to the court for the first time after recovering from his injury to play in the London Olympic Games. He closely beat Ville Lång of Finland in rubber games for the first round, and blamed pressure for close defeat. In the second round, he eased to a victory against Indonesia's Simon Santoso, before beating Kashyap Parupalli of India in the quarter-finals. In the semi-finals, he beat Chen Long of China in straight sets despite early predictions that Chen would be difficult to beat, and set up a repeat of 2008's final against Lin Dan. This is the second meeting in the Wembley Arena for both players after the 2011 World Championships. Lee led the match after winning the first game but Lin brought it to the rubber games. Despite leading for most of the time in the third game, Lin managed to level the point and edge him narrowly by 21–19, forcing Lee to settle for silver once more. BBC Sport analyst Gail Emms said, "You couldn't have asked for any more from Lee Chong Wei." This epic episode was documented in an academic article entitled "Silver lining in winning silver: an exploratory study of supporters’ reactions and coping on the social media towards Lee Chong Wei’s London Olympics defeat".

He won the Japan Open and Denmark Open on his return since the London Olympic Games, but lost in the final of the Hong Kong Open, only a few days after his marriage. Lee ended the year with a loss in the opening match of the Super Series Master Finals and subsequently pulled out of tournament due to thigh injury.

2010[edit]
व्यक्तिग जीवन
2011[edit]
2012[edit]