Riggs is set to graduate from Florida in May and will attend graduate school in South Bend. He will be eligible to play with for Notre Dame immediately.
In a statement, Fighting Irish coach Brian Kelly said that Riggs adds more talent to his roster.
"Cody Riggs is an outstanding player," said Kelly. "He played a ton of football at Florida having started at both safety and cornerback. Cody definitely brings veteran leadership and versatility to our team and defense.
"He will help us immediately but, more importantly, Cody is a great kid with a tremendous focus on both football and academics. His decision to complete his collegiate playing career and pursue a graduate degree at the University of Notre Dame speaks volumes about both our program and University."
Riggs was a starting safety for the Gators in 2013, where he had 51 tackles, including 6.5 for loss, and 1.5 sacks. He played in 40 career games for Florida, starting 26.
Earlier this month, Riggs told SI.com's Pete Thamel that his decision to leave Gainesville was not an easy one, but that he wanted the opportunity to expand his education. Riggs plans to pursue either an MBA or a Master of Science in Business at Notre Dame.
“I want to impact my community with that degree,” he said. “When a student that isn’t an athlete goes somewhere else for graduate school, they’re applauded. Same for coaches when they leave a school and it’s better for their family and future. When an athlete does it, though, it’s viewed as a problem.”