The Jamaican sprinter added the 200m crown to his 100m gold and became the first man to ever defend the Olympic 200m title this evening.
Read a selection of the comments from Twitter below.
"Wow wow he is unreal is not a human he is a perfect machine #legendBolt."
Footballer Carlos Cuellar
"Did bolt do 5 press ups cause he didn't beat the record??? Hahaha #machine"
QPR's Anton Ferdinand
"Jamaica 1 2 3....wow!! Jamaica must be jumping right now! @usainbolt The Best to ever do it."
Anton's brother Rio
"Congratulations to @usainbolt for Gold, @yohanblake for Silver and @warren_weir for Bronze in the Men's 200m."
Bolt's fellow Jamaican sprinter Asafa Powell
"Bolt..... Simply unbelievable!"
German tennis player Sabine Lisicki