Philipp Lienhart (born 11 July 1996) is an Austrian professional footballer who plays as a centre-back for Bundesliga club SC Freiburg and the Austria national team.

He made his senior debut for their reserve team on 16 April 2013, coming on as a late substitute in a 3–3 away draw against FC Admira Wacker Mödling Amateure for the Regionalliga championship.

[5] On 3 October 2015, Lienhart scored his first Castilla goal, equalising for a 1–1 draw at Sestao River Club by heading in Martin Ødegaard's corner kick.

[6] Two weeks later, amid an injury crisis, he was included in the main squad for the first time by manager Rafael Benítez, for a La Liga match against Levante UD;[7] he was unused in the 3–0 win at the Santiago Bernabéu Stadium.

Lienhart got his first call up to the senior Austria side after Sebastian Prödl withdrew through injury for 2018 FIFA World Cup qualifiers against Wales and Georgia in September 2017.