| Guillaume Lacour | |
| Birth Date: | 2 August 1980 |
| Birth Place: | Courbevoie, France |
| Height: | 1.73m |
| Position: | Defensive midfielder |
| Youthyears1: | 2001–2002 |
| Youthclubs1: | Lyon |
| Years1: | 2002–2010 |
| Clubs1: | Strasbourg |
| Caps1: | 243 |
| Goals1: | 4 |
| Years2: | 2010–2013 |
| Clubs2: | Évian |
| Caps2: | 51 |
| Goals2: | 0 |
| Years3: | 2012 |
| Clubs3: | Évian B |
| Caps3: | 1 |
| Goals3: | 0 |
| Years4: | 2013–2016 |
| Clubs4: | Troyes |
| Caps4: | 48 |
| Goals4: | 0 |
| Totalcaps: | 343 |
| Totalgoals: | 4 |
Guillaume Lacour (born 2 August 1980) is a French former professional footballer who played as a midfielder. He joined Évian from RC Strasbourg in July 2010, following an eight-year stint where he appeared in more than 200 league matches.[1] While at Strasbourg Lacour played as they won the 2005 Coupe de la Ligue Final.[2] Lacour finished his playing career with AS Troyes.[3]