| Valdemar Mota | |
| Birth Date: | 18 March 1906 |
| Birth Place: | Porto, Portugal |
| Death Date: | April 1966 |
| Position: | Midfielder |
| Years1: | 1926–1937 |
| Clubs1: | F.C. Porto |
| Nationalyears1: | 1928–1936 |
| Nationalteam1: | Portugal |
| Nationalcaps1: | 21 |
| Nationalgoals1: | 4 |
Waldemar Mota da Fonseca (18 March 1906 – April 1966), known as Valdemar Mota, was a Portuguese footballer who played as a midfielder and forward for FC Porto. He was born in Porto.
Valdemar Mota played 21 games and scored 4 goals for the Portugal national team. He made his debut 8 January 1928 in a 2–2 draw against Spain, and was playing for Portugal in the 1928 Football Olympic Tournament.[1] He scored 1 goal in Portugal's first game against Chile in a 4–2 victory in Amsterdam.