Merkur refers to a metal construction set built in Czechoslovakia (later the Czech Republic).

Later on, Jaromír Kříž bought out the company and during three years he got back the production and saved this renowned Czech toy.

[1] In 1961, Otto Wichterle used Merkur based apparatus for experimental production of the first soft contact lenses[citation needed].

The factory and Merkur museum are located in Police nad Metují, Czech Republic.

Merkur also produces a wide range of toys, including metal 0 scale model trains and steam engines.