| Japonês | |
| Fullname: | Adhemar Martins |
| Birth Date: | 9 December 1900 |
| Nationalteam1: | Brazil |
| Nationalyears1: | 1920 |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
Adhemar Martins, known as Japonês, (born 9 December 1900, date of death unknown) was a Brazilian footballer. He played in two matches for the Brazil national football team in 1920.[1] He was also part of Brazil's squad for the 1920 South American Championship.[2]