Styopa Mkrtchyan (; born 17 February 2003) is an Armenian professional footballer who plays as a centre back for German club 1. FC Nürnberg and the Armenia national team.
On 1 July 2022, Ararat-Armenia announced the return of Mkrtchyan from a season loan to BKMA Yerevan. On 28 February 2023, Mkrtchyan returned to BKMA Yerevan on loan for the remainder of the 2022/23 season.
On 21 July 2023, Mkrtchyan joined NK Osijek on a season-long loan deal with an option to make the move permanent. On 23 January 2024, NK Osijek announced the permanent signing of Mkrtchyan on a contract until the summer of 2026.
On 2 February 2026, Mkrtchyan signed a contract with 1. FC Nürnberg in German 2. Bundesliga.
He represented Armenia at the 2019 UEFA European Under-19 Championship.
In March 2022, Mkrtchyan was called up to the senior Armenia national team for the first time. Mkrtchyan made his international debut for Armenia on 24 March 2022 in a friendly match against Montenegro, where he played the full game.
Mkrtchyan speaks Armenian, English, and Russian.