Gabriel Gadiel Michael Kamagi (born 12 September 1996) is a Tanzanian football player who plays for Singida Black Stars.
In 2024, he moved abroad to South African club Cape Town Spurs on loan. After Cape Town Spurs became relegated, Kamagi signed for Chippa United in August 2024. In January 2025 he started training with Singida Black Stars of his homecountry, also joining the team permanently.
He made his Tanzania national football team debut on 10 June 2017 in an AFCON qualifier against Lesotho.
He was selected for the 2019 Africa Cup of Nations squad.