Rafael Duizit Mentzingen (born 2 May 1996) is a Brazilian footballer who most recently played as a midfielder for USL League One club Lansing Ignite.
He previously appeared at the semi-professional level for Southern West Virginia King's Warriors, Lansing United, and Detroit City.
Born in Rio de Janeiro, Mentzingen came to the United States to play collegiate soccer at Bryan College.
He spent two years with the Lions before transferring and playing his final two years of eligibility at Valparaiso.
Mentzingen was selected in the fourth round of the 2019 MLS SuperDraft, but instead signed for USL League One club Lansing Ignite, with who he made his professional debut in 2019.