Königslutter am Elm is a town in the district of Helmstedt in Lower Saxony, Germany.

Königslutter is a stop on the German Timber-Frame Road (Deutsche Fachwerkstraße) tourist route.

In its current form, the township with about 16,000 inhabitants was created in a 1974 administrative reform by joining the following 18 municipalities: A village called Lûtere in the Duchy of Saxony was first mentioned in an 1135 deed, when Emperor Lothair III established a Benedictine monastery here, centered on the Sts Peter and Paul Church, a prominent Romanesque basilica where he and his consort Richenza of Northeim as well as his son-in-law, the Welf duke Henry the Proud are also buried.

The place was named after the nearby karst spring of the Lutter (from Middle High German: lauter, "pure") stream in the Elm hills.

Located on the trade route from Brunswick to Magdeburg (the present-day Bundesstraße 1), beer brewing and Elm limestone mining and cutting were its main industries in early modern times, while the monastery developed as a pilgrimage destination.