Eray Ervin Cömert (born 4 February 1998) is a Swiss professional footballer who plays as a centre-back for Spanish club Valladolid, on loan from Valencia, and the Switzerland national team.

In summer 2014, he advanced to their U-18 team under coach Raphael Wicky, playing more than half of the games that season and winning the Swiss U-18 Cup.

[6] On 8 March 2017, Basel announced that they were loaning out Cömert to Lugano, until the end of the 2016–17 Swiss Super League season, so that he could gain first team playing experience.

But things were not much better, Basel ended the league season in second position, with a massiv 20 points residue behind champions Young Boys.

It was the 1st leg of the 2018–19 UEFA Europa League play-off round and it was the winning goal of the match as Basel won 3–2 against Apollon Limassol.

Following a home defeat against bottom of the table Thun, Basel lost contact to the top two teams and never caught up with them again.

In the return game of the second qualifying round at home against PSV Eindhoven Cömert scored his first Champions League goal.

[18] On 26 August, the club announced that Ciriaco Sforza had been hired as the first team manager as of 1 September 2020 for their 2020–21 season.

After the new year things went wrong again, five defeats and only one victory in the first nine games, so on 6 April 2021, Ciriaco Sforza was sacked "due to the recent poor results".

[20] In the 2020–21 Swiss Cup the team started in the third round and they messed things up completely, a 6–2 defeat against lower tier Winterthur.

In the 88th minute, shortly before Basel's winning goal, he could only catch the escaped Adryan with an emergency stop foul, for which he was shown the red card.

Following his red card in mid-October, the Swiss national team defender to wait for a further appearance in the Super League and this right up until the winter break.

Instead of Cömert, FCB coach Patrick Rahmen relied on either veteran Fabian Frei or youngster Nasser Djiga in his central defense.

[26] On 25 January 2022, Cömert moved abroad for the first time in his career, after signing a four-and-a-half-year contract with La Liga side Valencia CF,[27] for a rumoured fee of €800,000.

On 26 August 2023, Nantes announced that they and Valencia had reached an agreement on the loan of Cömert for the 2023–24 Ligue 1 season.

[29] On 10 July 2024, Cömert moved to fellow Spanish top-tier side Real Valladolid on loan for one year.