IKL may refer to:

• Concentration Camps Inspectorate, the agency that oversaw Nazi concentration camps, German acronym (Inspektion der Konzentrationslager)
• The Patriotic People's Movement, whose Finnish language name had the initials IKL.
• The Patriotic People's Movement (1993), also with initials IKL
• The Ingolstadt–Kralupy–Litvínov pipeline, a crude oil pipeline in Germany and the Czech Republic
• Ikela Airport, an airport in the Democratic Republic of the Congo with this IATA code
• Ingenieurkontor Lübeck, a German shipbuilding company