Jan Marten “Mart” Smeets (born 11 January 1947, in Arnhem) is a Dutch radio and television personality, writer, and columnist.

Mart Smeets is a long-time sports presenter and commentator with the Dutch public broadcaster NOS.

He is most famous for his reporting of the Tour de France, but also comments on speedskating, basketball (Smeets played at national level himself), and most other sports, apart from football (although he did present a news program around the 2006 FIFA World Cup).

The 2012 Tour de France was his last assignment during his NOS tenure; he announced he'd continue to work for them as a freelancer.

People watching the 2012 Tour de France shows, for instance, marked off Smeets-cliches on a Smeets Bingo card, and an anti-Smeets Facebook page ("Mart Auf Wiedersehen Smeets") was joined by 40,000 people.