Organisations
- Canadian Industries Limited, a chemical company best known for their explosives manufacturing and paints
- Centers for Independent Living, an American disabled persons' advocacy group
- Centre for International Law (CIL), part of the National University of Singapore
- Chicago, Indianapolis and Louisville Railway, a railway in Indiana
- Christadelphian Isolation League, a Christadelphian non-profit organisation
- Coal India Limited, an Indian state-owned coal company
- Commissioners of Irish Lights, the lighthouse authority for Ireland
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