| Type: | commune |
| County: | Bistrița-Năsăud |
| Population Total: | auto |
| Sânmihaiu de Câmpie | |
| Leader Name: | Ioan Mate |
| Leader Party: | PSD |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 46.9°N 44°W |
| Elevation: | 352 |
| Area Total: | 64.25 |
| Postal Code: | 427260 |
Sânmihaiu de Câmpie (Hungarian: Mezőszentmihály) is a commune in Bistrița-Năsăud County, Transylvania, Romania. It is composed of six villages: Brăteni (Mezőbarátfalva), La Curte (Köbölkútitanyák), Sălcuța (Fűzkút), Sânmihaiu de Câmpie, Stupini (Mezősolymos) and Zoreni (Lompérd).
The commune is located in the southern part of the county, on the Transylvanian Plateau. It lies from the county seat, Bistrița, close to the borders with Mureș and Cluj counties; Târgu Mureș is to the south, while Cluj-Napoca is to the west.
Sânmihaiu de Câmpie is traversed by county roads DJ151 and DJ162. The commune has a train station that serves the Căile Ferate Române Line 406, which comes from Bistrița Bârgăului and and leads to the town of Luduș in Mureș County.
Sights include the and the .
At the 2011 census, Sânmihaiu de Câmpie had a population of 1,459. According to the census, 85.74% of inhabitants are Romanians, 8.7% Roma, and 2.26% Hungarians.