WDL may stand for:

• WDL Aviation, a German airline (subsidiary of WDL Group)
• Western Desert language, an Australian dialect cluster also known as Wati
• White Defence League, a former British far-right political group
• World Digital Library, an international digital library operated by UNESCO and the United States Library of Congress
• Workers' Defense League, a former American socialist organization devoted to promoting labor rights

• World Open Cough & Tuberculosis Journal
• World Open Credit and Capital Markets Journal
• World Open Credit & Capital Markets Journal
• World Open Credit Cap. Mark. J.
• World Open Credit Cap Mark J
• World Open Criminol J
• World Open Criminol. J.
• World Open Criminology Journal
• World Open Crit. Agric. Rev. J.
• World Open Crit Agric Rev J
• World Open Crit Care J
• World Open Crit. Care J.
• World Open Crit. Care Med. J.
• World Open Crit Care Med J
• World Open Critical Agricultural Reviews Journal
• World Open Critical Care Journal
• World Open Critical Care Medicine Journal
• World Open Critical Review Journal
• World Open Crit. Rev. J.
• World Open Crit Rev J
• World Open Cryobiology Research Journal
• World Open Cryobiol Res J
• World Open Cryobiol. Res. J.
• World Open Crystallography Journal
• World Open Crystallogr J