Kamenec is a municipality and village in Rokycany District in the Plzeà  Region of the Czech Republic. It has about 80 inhabitants.
The village was named after the product that was mined here (kamenec = 'alum').
Kamenec is located about north of Rokycany and northeast of Plzeà Â. It lies in the Plasy Uplands. The highest point is a nameless hill at above sea level. The stream Radnický potok flows through the municipality.
Kamenec was founded in 1780 by Kaà ¡par Ledebour, when the area was part of his LiblÃÂn estate. Alum slate mines were established here, from which alum was extracted. From 1840, sodium silicate was produced here.
From 1850 to 1950, Kamenec was part of NÃÂmÃÂovice. From 1950 to 1980, it was an independent municipality. From 1 April 1980 to 23 November 1990, Kamenec was a municipal part of Radnice.
There are no railways or major roads passing through the municipality.
There are no protected cultural monuments in the municipality.