| Guillaume Dah Zadi | |
| Birth Date: | 1 January 1978 |
| Birth Place: | Abidjan, Ivory Coast |
| Height: | 1.86 m |
| Position: | Forward |
| Youthyears1: | 1990–1995 |
| Youthclubs1: | Africa Sports d'Abidjan |
| Years1: | 1995–1996 |
| Clubs1: | Africa Sports d'Abidjan |
| Years2: | 1997–1998 |
| Clubs2: | Satellite FC Abidjan |
| Years3: | 1998–2001 |
| Clubs3: | Wydad Casablanca |
| Years4: | 2001–2002 |
| Clubs4: | USM Annaba |
| Years5: | 2002–2003 |
| Clubs5: | Wydad Casablanca |
| Caps5: | 22 |
| Goals5: | 4 |
| Years6: | 2003–2005 |
| Clubs6: | EOG Kram |
| Years7: | 2005–2007 |
| Clubs7: | CSKA Sofia |
| Caps7: | 32 |
| Goals7: | 13 |
| Years8: | 2007–2008 |
| Clubs8: | Changchun Yatai |
| Caps8: | 41 |
| Goals8: | 19 |
| Nationalyears1: | 2006 |
| Nationalteam1: | Ivory Coast |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 4 |
Guillaume Dah Zadi (born 1 January 1978) is an Ivorian former professional footballer who played as a forward. His former clubs include Africa Sports d'Abidjan, Satellite FC Abidjan, USM Annaba, Wydad Casablanca, EOG Kram, CSKA Sofia and Changchun Yatai.