| Vald'Yerre | |
| Commune Status: | Commune |
| Arrondissement: | Châteaudun |
| Canton: | Brou |
| Insee: | 28012 |
| Postal Code: | 28290 |
| Mayor: | Franck Marchand[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Grand Châteaudun |
| Coordinates: | 48.101°N 1.124°W |
| Area Km2: | 145.30 |
Vald'Yerre (in French pronounced as /valdjɛʁ/; before 2023: Commune nouvelle d'Arrou in French pronounced as /kɔmyn nuvɛl daʁu/, literally New Commune of Arrou) is a commune in the department of Eure-et-Loir, north-central France. The municipality was established on 1 January 2017 by merger of the former communes of Arrou (the seat), Boisgasson, Châtillon-en-Dunois, Courtalain, Langey and Saint-Pellerin.[2]