Marcel Heister (born 29 July 1992) is a German footballer who plays as a defender for Croatian First League club Istra 1961.

On 16 June 2020, he became champion with Ferencváros by beating Budapest Honvéd FC at the Hidegkuti Nándor Stadion on the 30th match day of the 2019–20 Nemzeti Bajnokság I season.

[4] On 29 September 2020, he was member of the Ferencváros team which qualified for the 2020–21 UEFA Champions League group stage after beating Molde FK on 3-3 aggregate (away goals) at the Groupama Aréna.

[5] In June 2023, Heister signed a contract with Bulgarian club Ludogorets Razgrad.

[6] Heister is of partial Croatian and Danube Swabian descent, and his paternal grandparents Josef Heister and Danica Marić moved along with his father Lukas to Germany from Cerna, Croatia.