| Official Name: | Valdarachas, Spain |
| Pushpin Map: | Spain Province of Guadalajara#Spain Castilla-La Mancha#Spain |
| Subdivision Name3: | Valdarachas |
| Area Total Km2: | 10 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
Valdarachas is a municipality located in the province of Guadalajara, Castile-La Mancha, Spain.[1] According to the 2004 census (INE), the municipality has a population of 28 inhabitants.
Don José de Medrano y Rosales Maldonado y Medrano, born in Ciudad Real in 1879, inherited the position of the ninth owner of the Mayorazgo de Valdarachas. After his death, his marriage to his first cousin, Doña Teresa de Rosales y del Forcallo, resulted in a sole daughter and heir: Doña María Teresa de Medrano y Rosales, who married Don José María Henríquez de Luna y Baillo in 1949, became the tenth owner of the Mayorazgo de Valdarachas.[2]