| Manó Vályi | |
| Birth Name: | Manó Weiner |
| Birth Date: | 1891 9, df=y |
| Birth Place: | Szombathely, Austria-Hungary |
| Death Place: | Szombathely, Hungary |
| Spouse: | Rózsa Pollák |
| Known For: | head of the Judenrat in Szombathely |
Manó Vályi (born Weiner; 23 September 1891 – 23 April 1975) was a Hungarian Jewish merchant and religious leader. He presided the Judenrat in Szombathely during the Holocaust.
Manó Vályi was born as Weiner into a Neolog Jewish family in Szombathely on 23 September 1891, as the youngest surviving child of Jakab Weiner and Franciska Fischer. He attended the local Jewish school, then graduated from the local trade school. He earned a degree at the Commercial College of Kassa (present-day Košice, Slovakia). He fought as a first sergeant in the Serbian campaign at the beginning of the World War I. For his merits, he was awarded the Gold Medal of Bravery in 1915. At the end of the war, he became a prisoner of war held by the Kingdom of Italy.
Returning Hungary, Vályi married Rózsa Pollák (1888–1964) on 9 March 1919. They had three sons, Péter (1919–1973), Gábor (1922–2003) and Sándor (1924–2015).