| Type: | commune |
| County: | Bihor |
| Sânmartin | |
| Leader Name: | Cristian Laza |
| Leader Party: | PSD |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 47.004°N 21.976°W |
| Elevation: | 155 |
| Area Total: | 61.75 |
| Population Total: | auto |
| Postal Code: | 417495 |
| Area Code: | +(40) x59 |
Sânmartin (hu|Váradszentmárton) is a commune in Bihor County, Crișana, Romania with a population of 12,448 people as of 2021. It is the site of two spas, and Băile Felix.
The commune is composed of six villages: Betfia (Betfia), Cihei (Váradcsehi), Cordău (Kardó), Haieu (Hájó), Rontău (Rontó), and Sânmartin.
Rontău is a small village belonging to Sânmartin commune. The village is located close to the city of Oradea, the county seat. The village is usually considered to be part of Oradea, even though it is not a quarter or district of the urban proper, but is rather administered as part of the Sânmartin commune.
Rontău is about halfway between Oradea and Băile Felix. The village is accessible by train from Oradea and Băile Felix. It is also accessible by selected bus services from the above-mentioned places.