Simon Sluga (Croatian pronunciation: [sǐmon slǔːɡa]; born 17 March 1993) is a Croatian professional footballer who plays as a goalkeeper for Israeli Premier League club Maccabi Tel Aviv.

Before his professional career, Rijeka loaned Sluga to the youth academy of Juventus, and then to the youth academy of Hellas Verona. During the 2013–14 season he was loaned to Pomorac in Croatia's Druga HNL where he collected 31 caps and managed 17 clean sheets. He spent the 2014–15 season on loan with Lokomotiva where he was capped on 26 occasions. He returned to Rijeka following the end of the loan and made his professional debut on 19 July 2015 against Slaven Belupo. In August 2015, he was loaned to Spezia in Italy's Serie B.

On 19 July 2019, Sluga joined newly-promoted Championship side Luton Town for a club record fee of €1.5 million, signing a three-year contract. On 2 August 2019, Sluga made his first appearance for Luton in a 3–3 draw against Middlesbrough. Sluga left Luton in 2022 having played 94 times in all competitions and keeping 26 clean sheets.

On 31 January 2022, Sluga joined First Professional Football League club Ludogorets Razgrad.

On 17 October 2024, Sluga joined Israeli Premier League club Maccabi Tel Aviv on a contract until the end of the 2024–25 season.

He made his debut for Croatia on 11 June 2019 in a friendly against Tunisia, as a starter.

HNK Rijeka

Individual