Syam Ben Youssef ( Tunisian Arabic : صيام بن يوسف ; born March 31, 1989 in Marseille ) is a Tunisian footballer who plays as a center back for Turkish club Kasımpaşa in Süper Lig
Passed by the Sports Union traminots Marseille and the training center SC Bastia  . Ben Youssef joined ES Tunis on a two-year contract on 12 August 2009  , he made his professional debut in the Tunisian championship on September 12, 2009, against CS Sfaxien (4-0) at Stade 7 November , and scored his first goal. On December 14, he received his first meeting with the national team.
After playing few months in England in Leyton Orient  , he signed to FC Astra Giurgiu in Romania , where he remained 3 seasons, won 2013-14 Cupa României and discovered European competitions  .
On June 29, 2015, free of any contract with the Romanian club, he committed to 3 seasons to SM Caen , he played his first match in Ligue 1 on August 22 against OGC Nice . He scored his first goal in the fifth day against Troyes AC .
On 5 July 2017, he agreed with the SM to the Turkish club Kasımpaşa SK for 3 seasons.
With the National team he started in 2010, collecting 30 appearances. He played his first African Cup in 2015 , he also participated in the 2017 Africa Cup of Nations .
On 17 November 2015, he scored his first goal with the Tunisian team in the second round of the 2018 World Cup qualification against Mauritania .
- Tunisia’s goal tally first. 
|1.||November 17, 2015||Stade 7 November , Radès , Tunisia||mauritania||1 -0||2-1||2018 FIFA World Cup qualifying|
- ES Tunis
- CAF Champions League (1): 2011
- Tunisian Ligue 1 (2): 2009-10 , 2010-11
- Tunisian Cup (1): 2010-11
- Astra Giurgiu
- Cupa României (1): 2013-14
- Supercupa României (1): 2014
- Liga I Runner-up (1): 2013-14
- Jump up^ http://www.kawarji.com/player,1093,156.html
- Jump up^ http://www.mosaiquefm.net/index/a/ActuDetail/Element/7952-Syam-Ben-Youssef-d%C3%Barbar-choose-the-sangs-and-or.html
- Jump up^ “O’s Sign Defender Leacock” . Leyton Orient FC 14 January 2012.
- Jump up^ “Asi Astrei ii plac tunisienii!” . Ziarul Prahova . Retrieved 23 June 2012 .
- Jump up^ “Ben Youssef, Syam” . National Football Teams . Retrieved 14 February 2017 .