Althea Rebecca Reinhardt (born 1 September 1996) is a Danish handball player for Odense Håndbold and the Danish national team.

[1][2] She signed for Odense in 2016, after starting the career at Nykøbing Falster Håndboldklub.

She was part of the national team that finished 4th at the 2016 European Championship in Sweden.

[3] A week before the tournament the goalkeeper Rikke Poulsen was reported injured, which led to Althea Reinhardt being a part of the Denmark squad at an international tournament for the first time.

On December 8th 2024 at a training session during the 2024 European Championship she suffered a concussion, which kept her out for over 2 months.