| Stadium Name: | Estádio Municipal de Rio Maior |
| Location: | Rio Maior, Portugal |
| Built: | 2002 |
| Opened: | 2003 |
| Owner: | Desmor, EM, SA |
| Surface: | Relva |
| Architect: | Antonio Domingues |
| Tenants: | U.D. Rio Maior U.D. Vilafranquense (2019–2023) Sporting B (2012–2013) Portugal U21 (regularly) Casa Pia (2023–) |
| Seating Capacity: | 7 000 |
| Dimensions: | 104 x 68 metres |
Estádio Municipal de Rio Maior is a multi-use stadium in Rio Maior, Portugal. It is currently used mostly for football matches and is the home stadium of UD Rio Maior. The stadium is able to hold 7 000 people and opened in 2003.[1] [2] It served as the home stadium for Sporting B in their first season, before moving to Alcochete.[3] U.D. Vilafranquense hosted games at the ground in their debut LigaPro season in 2019–20, due to the inadequate facilities at their own ground.[4]