Siculeni
| Siculeni Madéfalva | |
|---|---|
| Memorial of the Siculicidium | |
| Location in Harghita County | |
| Coordinates: 46°25′N 25°45′E / 46.417°N 25.750°E | |
| Country | Romania | 
| County | Harghita | 
| Government | |
| • Mayor (2020–2024) | Csaba Szentes (UDMR) | 
| Area | 39.39 km2 (15.21 sq mi) | 
| Elevation | 699 m (2,293 ft) | 
| Population  (2021-12-01) | 2,511 | 
| • Density | 64/km2 (170/sq mi) | 
| Time zone | EET/EEST (UTC+2/+3) | 
| Postal code | 537295 | 
| Area code | +(40) 266 | 
| Vehicle reg. | HR | 
| Website | www | 
Siculeni (Hungarian: Madéfalva, Hungarian pronunciation: [ˈmɒdeːfɒlvɒ]) is a commune in Harghita County, Romania. It lies in the Székely Land, an ethno-cultural region in eastern Transylvania. The Siculicidium took place here.
The commune is composed of a single village, Siculeni. In 2004, four villages broke off to form Ciceu and Racu Communes.