Lej may refer to:
Ləj, a village and municipality in the Lankaran Rayon of Azerbaijan
Lej, Iran, a village in West Azerbaijan Province, Iran
Lashkar-e-Jhangvi (LeJ), an Islamist militant organization.
Leipzig/Halle Airport, a public airport serving both Leipzig, Saxony and Halle, Saxony-Anhalt, Germany
Lengola language, a Bantu language of the Democratic Republic of the Congo
L.E.J, a French singing trio