European route E233

European route E 233 (E 233) is a west—east European Class-B road part of the International E-road network, running from Hoogeveen in the Netherlands to Cloppenburg in Germany, passing by the Dutch city of Emmen and the German city of Meppen. The road runs concurrently with four other roads over its course, first with the Dutch A37 from its western terminus to the German border, then with the German up to Haselünne, from there on it follows up to northern Cloppenburg, and on the last 2 kilometres (1.2 mi) of the B213 concurrency it also runs concurrent with , which it then follows up to its eastern terminus at the A1, which is also part of E 37. The road has a total length of 132 kilometres (82 mi), of which 41 kilometres (25 mi) in the Netherlands and 91 kilometres (57 mi) in Germany.

E 233 was first proposed as "E 232 Oldenzaal—Bremen" in the European Agreement on main international traffic arteries (AGR) in 1975, which was put into force in 1983. After a realignment and renumbering it follows its current course.

The Dutch section of the highway is maintained by Rijkswaterstaat. The German section is maintained by the BMVI.