Mohamed El Mehdi Boukassi (; born 15 June 1996) is an Algerian professional footballer who plays as a midfielder for Czech National Football League club Opava.
Boukassi played in Portugal and Bulgaria as well.
In February 2021, Boukassi signed with Torpedo Kutaisi and was presented as a new player of the club.
In March 2023, Boukassi was loaned out to Finnish Veikkausliiga club Haka from Raja CA for the 2023 season. He eventually missed most of the season due to injury.
In January 2024, he joined Tadamon Sour SC in Lebanon.
On 12 January 2026, Boukassi signed a contract with Czech National Football League club Opava until 2027.