Financial aspects of the agreement weren't release but Richt's current contract pays him $2.81 million a year. It ran through the 2013 season.
"The extension is a statement that we are excited to have Mark as our coach and that he is excited about being at Georgia in the years to come," said Georgia Athletic Director Greg McGarity.
Richt, 52, has coached the Bulldogs for 11 seasons. The team was 6-7 in 2010 -- the only losing record under Richt, but rebounded to a 10-4 overall record and 7-1 in the SEC East in 2011.
Overall, Georgia is 106-38, which includes a 62-30 conference record, under Richt. The Georgia position has been his only head coaching job.
"I've said for many years that I wanted to be at Georgia as long as Georgia wanted me," Richt said. "I'm excited about where we are with our program and looking forward to the years ahead."