| Birth Date: | 13 April 1895 |
| Birth Place: | Prague, Austria-Hungary |
| Death Place: | Prague, Bohemia and Moravia |
| Ntl Team: | TCH |
| Position: | Right wing |
| Career Start: | 1919 |
| Career End: | 1929 |
Valentin Jaroslav "Vilda" Loos (13 April 1895 in Prague, Austria-Hungary - 8 September 1942 in Prague, Bohemia and Moravia) was a Czechoslovak ice hockey player who competed in the 1920 Summer Olympics and in the 1924 Winter Olympics.
He was a member of the Czechoslovak ice hockey team that won the bronze medal in 1920. Four years later he also participated in the first Winter Olympic ice hockey tournament.[1]