| Justin McCarthy | |
| Birth Date: | 22 September 1894 |
| Birth Place: | Alberton, Victoria |
| Death Place: | Prahran, Victoria |
| Originalteam: | Footscray (VFA) |
| Debutdate: | Round 11, 1913 |
| Debutteam: | Carlton |
| Debutopponent: | South Melbourne |
| Debutstadium: | Lake Oval |
| Height: | 182 cm |
| Weight: | 81 kg |
| Statsend: | 1926 |
| Years1: | 1913–1914 |
| Club1: | Carlton |
| Games Goals1: | 3 (2) |
| Years2: | 1915 |
| Club2: | Footscray (VFA) |
| Games Goals2: | 1 (0) |
| Years3: | 1919–1921 |
| Club3: | Brighton (VFA) |
| Games Goals3: | 34 (27) |
| Years4: | 1922–1926 |
| Club4: | Essendon |
| Games Goals4: | 56 (60) |
Justin McCarthy (22 September 1894 – 26 February 1981)[1] was an Australian rules footballer who played for Carlton and Essendon in the VFL before and after the First World War.
McCarthy played with Essendon during their 'Mosquito Fleet' era and was one of their taller players at 182 cm. He was used as a centre half forward, having his best season in 1923 when he kicked 23 goals including two in Essendon's grand final win over Fitzroy.