| Type: | commune |
| County: | Satu Mare |
| Population Total: | auto |
| Sanislău | |
| Other Name: | Szaniszló |
| Leader Name: | Krémer Stefan[1] |
| Leader Term: | 2024 - 2028 |
| Leader Party: | FDGR |
| Coordinates: | 47.6333°N 42°W |
| Elevation: | 132 |
| Area Total: | 74.78 |
| Postal Code: | 447260 |
Sanislău (Hungarian: Szaniszló, Hungarian pronunciation: NaNsz; German: Stanislau) is a commune of 4,986 inhabitants situated in Satu Mare County, Romania. It is composed of three villages: Horea (Károlyipuszta), Marna Nouă (Újmárna) and Sanislău. Until 2004, it also included Ciumești, Berea, and Viișoara, but these were split off that year to form Ciumești commune.
The commune is located at the western limit of the county, at a distance of west of Carei and from the county seat, Satu Mare. It borders Hungary to the west, Petrești commune to the east, Ciumești to the north, and Pișcolt commune to the south.[2]
The is a protected area located on the territory of Sanislău.