Tecklenburg (German: [ˈtɛklənˌbʊʁk] ⓘ) is a town in the district of Steinfurt, in North Rhine-Westphalia, Germany.

In 1701, Tecklenburg was conquered by the Kingdom of Prussia and subsequently incorporated.

[citation needed] Today, the town of Tecklenburg is a tourist destination, because of its largely intact medieval townscape.

Main sites include the ruined castle (now serving as open-air theatre during the summer) and the Stadtkirche (the main, old church) including tombs of the counts and princes of Tecklenburg-Bentheim, as well as others prominent in the history of the county and city.

Around 1700, the castle was dilapidated and its brick and stone was used for other buildings in Tecklenburg, leaving nothing but a ruin.