Weightlifting at the 2012 Summer Olympics – Men's 77 kg

Total score was the sum of the lifter's best result in each of the snatch and the clean and jerk, with three lifts allowed for each lift. In case of a tie, the lighter lifter won; if still tied, the lifter who took the fewest attempts to achieve the total score won. Lifters without a valid snatch score did not perform the clean and jerk.[2]

China's Lü Xiaojun set two world records with a lift of 175 kilograms in the snatch and a total weight of 379 kilograms. Lü Xiaojun planned to attempt 177 kg in the snatch after he made the 175 kg world record lift, but was not given a chance to perform his third attempt due to a timing miscommunication between the officials and coaches. China's Lu Haojie posted 170 kg in the snatch, and went on to lift 190 kg in the clean and jerk despite an elbow injury.

South Korea's Sa Jae-hyouk was forced to retire from the competition after he dislocated his elbow during his second snatch attempt.

Two lifters who were on the start list did not compete: Armenia's Tigran Martirosyan was forced to scratch from the competition due to a back injury during the warm-up, while Albania's Hysen Pulaku was ejected from the Games after he tested positive for stanozolol.[3]

All times are British Summer Time (UTC+01:00)

Prior to this competition, the existing world and Olympic records were as follows.

World Record	Snatch	Lü Xiaojun (CHN)	174 kg	Goyang, South Korea	24 November 2009
	Clean & Jerk	Oleg Perepetchenov (RUS)	210 kg	Trenčín, Slovakia	27 April 2001
	Total	Lü Xiaojun (CHN)	378 kg	Goyang, South Korea	24 November 2009
Olympic Record	Snatch	Taner Sağır (TUR)	172 kg	Athens, Greece	19 August 2004
	Clean & Jerk	Zhan Xugang (CHN)	207 kg	Sydney, Australia	22 September 2000
	Total	Taner Sağır (TUR)	375 kg	Athens, Greece	19 August 2004

• Results