| Lou Barker | |
| Fullname: | Louis Barker |
| Birth Date: | 26 May 1876 |
| Birth Place: | Melbourne, Victoria |
| Death Place: | Kew, Victoria |
| Originalteam: | South St Kilda |
| Height: | 179 cm |
| Weight: | 76 kg |
| Position: | Half forward / Defence |
| Statsend: | 1908 |
| Years1: | 1900–08 |
| Games Goals1: | 150 (63) |
| Sooteam1: | Victoria |
| Sooyears1: | 1903 |
| Careerhighlights: | |
Louis Barker (26 May 1876 – 23 May 1963) was an Australian rules footballer who played for the Fitzroy Football Club in the Victorian Football League (VFL).