Evelyn Nwabuoku joins her compatriot and Super Falcons teammates Desire Oparanozie at the club.
According to the club, Evelyn signed a two-year-contract as a free agent after her contract with Sweden clubside, Ostersund DFF had expired.
She joined Ostersund DFF in April 2016 from Biik Kazygurt where she won two consecutive Kazakhstan Women Premier league titles.
The 30-year-old is the first signing of Guingmamp as they kick off preparation for the forthcoming 2016/2017 French women topflight campaign.
They finished eighth on the French Women topflight log with 47 points from 22 games and they will be hoping that the signing of the Nigerian player would make them challenge the likes of Paris Saint-Germain and Lyon for the title.
She joins her compatriot and Super Falcons teammates Desire Oparanozie at the club.