The 23-year-old has signed a five-year contract with the highly-rated defender.
Jemerson will move to Monaco for a fee reported to be in the region of €10million.
Jemerson told his new club’s website: “I am very proud to sign for AS Monaco. This is a big club where a lot of great players have come through, and I’ll be doing all I can to be one of them.
“I want to help the team achieve its objectives as quickly as possible, especially Champions League qualification. I intend to give my all for the AS Monaco shirt.”
Club vice-president Vadim Vasilyev added: “We are very proud to welcome Jemerson, a young Brazilian defender whom we have been tracking regularly. We have a lot of faith in him. He will have the opportunity to develop at AS Monaco, and we are sure he will soon be showing all of his qualities.”