[4] The latter lies some three kilometres as the crow flies from Lettweiler's main centre and was founded by Mennonites.

In 1190, Lettweiler had its first documentary mention under the name Litwilre in a directory of landholds in which a lord, Werner II of Bolanden, stated that he had been enfeoffed with the village by the Archbishop of Mainz.

[6] In 1603, Nassau-Saarbrücken ceded the village to Palatine Zweibrücken, with which it remained until the late 18th century.

Ecclesiastically, Lettweiler (pastorate of Odernheim/deaconry of Obermoschel) belongs to the Evangelical Church of the Palatinate and the Roman Catholic Diocese of Speyer.

At the Neudorferhof, where today one of the municipality's two riding stables is to be found, the Romans long ago set up a way station where horses could be changed.

[1] The following are listed buildings or sites in Rhineland-Palatinate’s Directory of Cultural Monuments:[13] The 17th-century church was built to replace a 14th-century village chapel after this had fallen into disrepair and had to be torn down.

[14] Lettweiler has one listed natural monument, the Dicke Eiche (“Fat Oak”; no.

This stands east of the village in the rural cadastral area known as “Auf der Trift”.