The 1955 Dutch TT was the sixth round of the 1955 Grand Prix motorcycle racing season.

It took place on 16 July 1955 at the Circuit van Drenthe, Assen.

A new 4.7 mile (7.7 km) circuit had been built at Assen for the Dutch TT; the public road version was no longer used after 1954.

This track set the foundation for future Dutch TT's.