MERMEC S.p.A. is an Italian company focused in the development of rail transport technologies (signalling, measurement trains and systems, electric traction and telecommunications) and industrial applications.

In the early 1990s MER MEC, in cooperation with the main Italian research institutes, developed an opto-electronic system for the automatic inspection of railway infrastructure conditions.

The 1990s also saw the prototype of the ROGER vehicle which is an acronym for Rilievo Ottico Geometria Rotaia, Italian for optical rail geometry control.

In 1997 MER MEC produced the ROGER 1000, a self-propelled vehicle for rail track and overhead line inspection.

On June 17, 2023, MERMEC, led by the President Vito Pertosa, represented Italy at the G7 Transport Ministers' Meeting in Ise-Shima, Mie.