Viljoenskroon is a maize and cattle farming town located in the Free State province of South Africa. It was named after the original farm owner J. J. Viljoen and his horse Kroon (Crown). The town was laid out in 1921 on the farm "Mahemskuil" and became a municipality in 1925.The Viljoenskroon municipality and neighboring township of Rammulotsi were incorporated into the greater Moqhaka Local Municipality in 1996 and forms part of the Fezile Dabi District municipality.
The Viljoenskroon/Rammulotsi urban unit has an estimated population of 59 202. Viljoenskroon historically played a part in providing residential opportunities to the adjacent mining communities at Lace Diamond Mine and the Orkney gold mines.