Louis, Count Leiningen-Westerburg (1557–1622) was a German nobleman.
He was a member of the House of Leiningen and was the ruling count of Leiningen-Leiningen from 1597 until his death.
By marrying Amelia, he had expanded his territory with her inheritance, the imperial county of Rixingen.
Philip II, the youngest son, received the Imperial County of Rixingen, where he founded the Leiningen-Rixingen line.
His elder brother John Casimir received the lands Louis had inherited from his father, and continued the Leiningen-Leiningen line.