Meppen (German pronunciation: [ˈmɛpm̩] ^ⓘ; Northern Low Saxon: Möppen) is a town in and the seat of the Emsland district of Lower Saxony, Germany, at the confluence of the Ems, Hase, and Nordradde rivers and the Dortmund–Ems Canal (DEK). The name stems from the word Mappe, meaning "delta".

As of 2023, the population of Meppen is 36,137.

The town is in the central part of the Emsland, at the mouth of the Hase River where it meets the Ems, between the cities of Lingen and Papenburg. About 20 kilometres (12 mi) from the Dutch border, Meppen has an area of 188.45 square kilometres (72.76 sq mi) and is 15 metres (49 ft) above sea level.

In 1974, 13 independent, surrounding municipalities were integrated into Meppen.

Meppen, formerly a fortified town, boasts 12 centuries of history. The first documented mention of Meppen dates from 834, in a deed of donation by Frankish emperor Louis the Pious, transferring a missionary establishment of that name to the abbey of Corvey.

Between September and April the Meppen Theatre Group (Theatergemeinde Meppen) offers a comprehensive programme. Productions take place in the Meppen Theatre and Concert Hall, which was designed by Eberhard Kulenkampff and completed in 1959. It also acts as a school hall for the Windthorst Gymnasium. The programme includes both touring theatre productions as well as musical events of various genres.

From May to September, the Emsland Open Air Stage at Meppen (Emsländische Freilichtbühne Meppen) offers visitors a family musical and an evening event, mostly based on musical productions. More than 30,000 visitors come each year to the open air theatre in Esterfeld Forest to see large musical performances involving casts of up to 100.

The population figures in the table below include the villages belonging to the town of Meppen.