Seneslau

thumb|300px|right|alt=|Romanian state formations in 1246

Seneslau, also Seneslav or Stănislau, was a Vlach voivode mentioned in the Diploma of the Joannites issued by king Béla IV of Hungary (1235–1270) on 2 July 1247. The diploma granted territories to the Knights Hospitaller in the Banate of Severin and Cumania. According to the diploma, the king gave the territories east of the Olt River to the knights, with the exception of the territory of voivode Seneslau.