Michael Steinwender (born 4 May 2000) is an Austrian professional footballer who plays as a centre-back for club Heart of Midlothian.
Steinwender is a product of the youth academies of , Rapid Wien, Mattersburg and . He began his senior career with the reserves of Mattersburg in 2017. He made his professional debut with Mattersburg in a 2âÂÂ0 Austrian Football Bundesliga win over St. Pölten on 20 June 2020. On 19 August 2020, he transferred to St. Pölten, signing a 3-year contract. On 31 August 2021, he moved to Hartberg, again signing a 3-year contract.
On 21 January 2025, Steinwender joined Scottish Premiership club Heart of Midlothian on a three-and-a-half year contract for an undisclosed fee.
Steinwender is a youth international for Austria, having represented the Austria U18s and U19s.