| Ademar Caballero | |
| Fullname: | Ademar Alberto Novo Caballero |
| Strokes: | Backstroke |
| Birth Date: | 1918 12, df=yes |
| Birth Place: | Rio de Janeiro, Brazil |
| Death Place: | Rio de Janeiro, Brazil |
Ademar Alberto Novo Caballero (2 December 1918 – 25 March 1982) was an Olympic backstroke swimmer from Brazil, who participated at one Summer Olympics for his native country.[1] At the 1936 Summer Olympics in Berlin, he swam the 100-metre backstroke, not reaching the finals.