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- Langwaden Abbey or Priory (Kloster Langwaden), Hülchrath, Grevenbroich: Premonstratensian nuns 1145-1802; Cistercian monks 1964-today
- St. Mary's Priory, Lemgo (Kloster Sankt Maria, Lemgo), Lemgo: Dominican nuns (dates tbe)
- Lette Abbey or Priory (Kloster Lette), Lette, Oelde: Premonstratensian double monastery 1133-before 1146; canons moved to Clarholz before 1146, thereafter Premonstratensian nuns (end date tbe)
- St. Elisabeth's House, Hitdorf, Leverkusen: Olpe Sisters (dates tbe)
- Levern Priory or Abbey (Stift Levern), Levern, Stemwede: Cistercian nuns 1227-1558; secular canonesses 1558-1810
- Liesborn Abbey (Abtei Liesborn), Wadersloh: Benedictine nuns 785 (or 815)-1131; Benedictine monks 1131-1803
- Lübbecke Priory or Abbey (Stift St. Andreas, Lübbecke), Lübbecke: canons 1295-1810
- St. Anthony's Convent, Lüdinghausen (St.-Antonius-Kloster, Lüdinghausen), Lüdinghausen: Franciscan Sisters of the Atonement and the Love of Christ, also known as the Lüdinghauser Sisters, c. 1900-today
Read more about this topic: List Of Christian Religious Houses In North Rhine-Westphalia