| Barney Carr | |
| Fullname: | Charles Oliver Carr |
| Birth Date: | 27 August 1897 |
| Birth Place: | Port Melbourne, Victoria |
| Death Place: | Parkville, Victoria |
| Originalteam: | Prahran (VFA) |
| Height: | 175 cm |
| Weight: | 75 kg |
| Statsend: | 1929 |
| Years1: | 1921–1929 |
| Club1: | St Kilda |
| Games Goals1: | 130 (5) |
Charles Oliver "Barney" Carr (27 August 1897 – 19 January 1971) was an Australian rules footballer who played with St Kilda in the Victorian Football League during the 1920s.
A centreman, Carr played 130 games with St Kilda and represented Victoria at interstate football on nine occasions. He won St Kilda's best and fairest in 1922 and was club captain during the latter part of the 1925 season.