Giannis Konstantelias (Greek: Γιάννης Κωνσταντέλιας; born 5 March 2003) is a Greek professional footballer who plays as an attacking midfielder or a winger for Super League club PAOK and the Greece national team.

On 20 January 2022, Konstantelias signed a six months' contract with Jupiler Pro League club Eupen on loan from PAOK.

[4] On the same day, PAOK announced the extension of the contract with the young international until the summer of 2026.

[5] On 24 March 2023, Konstantelias made his debut for the Greece senior team in a 3–0 UEFA Euro 2024 qualifying win over Gibraltar.

[6] On 17 November 2023, he made his first start for Greece and scored his senior international goal in a 2–0 friendly win over New Zealand.