| Kassi Mathias | |
| Fullname: | Kassi Akesse Mathias |
| Birth Date: | 21 November 1985 |
| Birth Place: | Abidjan, Ivory Coast |
| Height: | 1.83 m |
| Currentclub: | Ittihad Tanger |
| Position: | Centre back / Full back |
| Years1: | 2004–2005 |
| Years2: | 2005–2006 |
| Years3: | 2006–2007 |
| Years4: | 2007–2008 |
| Years5: | 2008–2012 |
| Years6: | 2012–2013 |
| Years7: | 2013–2018 |
| Years8: | 2018–2019 |
| Years9: | 2020– |
| Clubs1: | Ecole Autonome |
| Clubs2: | CO Bouaflé |
| Clubs3: | Requin F.C. |
| Clubs4: | Denguelé |
| Clubs5: | JC Abidjan |
| Clubs6: | Séwé Sports |
| Clubs7: | OC Safi |
| Clubs8: | OC Khouribga |
| Clubs9: | IR Tanger |
| Caps7: | 95 |
| Goals7: | 4 |
| Caps8: | 31 |
| Goals8: | 1 |
| Pcupdate: | 17:55, 17 January 2020 (UTC) |
Kassi Mathias (born 21 November 1986 in Abidjan) is an Ivorian footballer who plays as a defender for Moroccan side Ittihad Tanger.
He played for many big clubs in Ivory Coast and Benin and has great performance records. In the 2008–09 season, Kassi was named the best defender in all Ivory-Coast League. This performance attracted notice from clubs at home and abroad. He also participated in CAF competition in 2007 for Denguelé. On 31 December 2009, Kassi joined El-Entag El-Harby and was offered a contract after a successful 2-week trial. El-Entag El-Harby and Jeunesse Club d'Abidjan did not agree on transfer fees of $50,000. Therefore, Kassi returned to Jeunesse Club d'Abidjan on 31 January 2010.