Nikolaos "Nikos" Michelis (; born 23 March 2001) is a Greek professional footballer who plays as a centre-back for Liga Portugal 2 club Académico de Viseu.
During his maiden full campaign in Italy, Michelis made 15 appearances for AC Milan's youth team in the Campionato Nazionale Primavera, popping up with the one assist in a 5âÂÂ2 victory against Virtus Entella youth sector at home in November 2019.
On 13 July 2021, Michelis was loaned to Eredivisie club Willem II until the end of the season, with an option to buy when the loan is over.
On 30 July 2022, Michelis signed a three-year contract with Spanish Segunda División side Mirandés.
On 16 July of the following year, he was loaned to Primera Federación side CA Osasuna B for the season.
On 15 August 2024, Michelis moved to Portugal, and joined Liga Portugal 2 club Académico de Viseu as a free agent.
Michelis has represented Greece internationally with the under-18s, under-19s and under-21s.