Syam Habib Ben Youssef was born on 31 March, 1989 in Marseille. He is a Tunisian footballer who plays as a centre-back for Turkish club Kasımpaşa.
Ben passed by the Union sportif des traminots Marseille and the training center of SC Bastia. He joined ES Tunis on a two-year contract on 12 August 2009, Habib made his professional debut in the Tunisian championship on 12 September 2009, against CS Sfaxien (4–0) at Stade 7 November, and scored his first goal. On 14 December, he received his first convocation with the national team.
After playing few months in 2012 in England at Leyton Orient Syam was signed to FC Astra Giurgiu in Romania, where he remained three seasons, won 2013–14 Cupa României and discovered European competitions.
On 29 June 2015, free of any contract with the Romanian club, he committed for three seasons to SM Caen, Youssef played his first match in Ligue 1 on 22 August against OGC Nice. He scored his first goal in the fifth day against Troyes AC.
On 5 July 2017, he agreed with the SM Caen to cancel his contract and joined the Turkish club Kasımpaşa SK for three seasons.
In May 2018 he was named in Tunisia’s preliminary 29 man squad for the 2018 FIFA World Cup in Russia. He was selected in the final 23. His goal for Tunisia against Panama was the 2500th scored in history of soccer World Cup.