Nordkalk is a manufacturer of limestone-based products based in Finland.

It operates at more than 30 different locations in Finland, Sweden, Norway, Poland and Estonia.

Industrial quarrying began on 26 November 1898 when the joint-stock company Pargas Kalkbergs Aktiebolag was established by Otto Moberg.

In August 2010 Rettig Group Ltd becomes the sole owner of Nordkalk.

Nordkalk Corporation continues to quarry and process limestone as a member of the Rettig Group.