Nassim Ben Khalifa (born 13 January 1992) is a Swiss professional footballer who plays as a forward for the J1 League club Avispa Fukuoka.

[2] Ben Khalifa made his debut with Grasshoppers in the Swiss Super League on 7 March 2009, at the age of 17, where he played the last 11 minutes in the game against FC Sion.

Ben Khalifa spent the first half of the 2010–11 season, playing in the club's reserve, where he made his debut, in a 4–2 win over Türkiyemspor Berlin on 20 August 2010.

[16] In the Europa League play-offs in the second leg, Ben Khalifa was sent off in the 62nd minute after he was involved in an incident with Quim, as Young Boys drew 2–2 with Braga, but were eliminated due to away goal.

[17] While at Young Boys, Ben Khalifa made seventeen appearances and scoring against Neuchâtel Xamax on 21 September 2011 and Thun on 10 December 2011.

[18] He made his debut since coming back two years ago, as Grasshoppers lost 2–0 to Sion, in the opening game of the season[19] and on 28 July 2014, he scored his first goal for the club, in a 2–2 draw against Basel.

[20] He would later score six goals in thirty-three appearances and helped the club win the Swiss Cup after beating Basel on penalty-shootout, ending a ten-year drought.

[30] Ben Khalifa joined Espérance de Tunis in his native country in the summer of 2020, but left the team by mutual consent on 24 March 2022.

He has participated at the U-17 European Championships in 2008 in Turkey and in 2009 in Germany as well as at the Under-17 World Cup in 2009 in Nigeria, where he was awarded the "Silver Ball" trophy for the second best player of the tournament.