| LEC | Environmental Consultants 
| Others |
| LEC | Lake Erie Center
| Others |
| LEC | Lake Erie College
| Others |
| LEC | LAN Emulation Client
| Others |
| LEC | Lancaster Environment Centre
| Others |
| LEC | Lancer Evolution Club
| Others |
| LEC | Landmark Education Center
| Others |
| LEC | Landmark Education Corporation
| Others |
| LEC | Language Engineering Company
| Others |
| LEC | Language Evolution and Computation
| Others |
| LEC | Language Exchange Club
| Others |
| LEC | Laredo Entertainment Center
| Others |
| LEC | Large Enterprise Company
| Others |
| LEC | Law Enforcement Center
| Others |
| LEC | Law Extension Committee
| Others |
| LEC | Law of Energy Conservation
| Others |
| LEC | le Car
| Others |
| LEC | le Sabre Custom
| Others |
| LEC | Leading Edge Composites
| Others |
| LEC | Leading Edge Consortium
| Others |
| LEC | Learning Enhancement Center
| Others |
| LEC | Learning Enrichment Center
| Others |
| LEC | Least Expected Company
| Others |
| LEC | Lee Early College
| Others |
| LEC | Legends European Championship
| Others |
| LEC | Legislative Energy Commission
| Others |
| LEC | Lenovo Easy Camera
| Others |
| LEC | Less Engine Coolant
| Others |
| LEC | Lester Eastman Conference
| Others |
| LEC | Levelized Electricity Costs
| Others |
| LEC | Lexus Eco Challenge
| Others |
| LEC | Liberia Electricity Corporation
| Others |
| LEC | Library Exam Centre
| Others |
| LEC | Life Enriching Communities
| Others |
| LEC | Life Enrichment Center
| Others |
| LEC | Life Events Checklist
| Others |
| LEC | Light Emitting Capacitor
| Others |
| LEC | Light Emitting Ceramic
| Others |
| LEC | Light Emitting Ceramics
| Others |
| LEC | Light to Electricity Converter
| Others |
| LEC | Lignite Energy Council
| Others |
| LEC | Limited Edition Custom
| Others |
| LEC | Lincoln Education Center
| Others |
| LEC | Line Echo Cancellation
| Others |
| LEC | Linear Expansion Coefficient
| Others |
| LEC | Link Edit Control
| Others |
| LEC | Linux Education Center
| Others |
| LEC | Liquid Encapsulation Czochralski
| Others |
| LEC | Little East Conference
| Others |
| LEC | LIVE Entertainment Chicago
| Others |
| LEC | Local Edge Clique
| Others |
| LEC | Local Educational Consortium
| Others |
| LEC | Local Emergency Controls
| Others |
| LEC | Local Ethics Committee
| Others |
| LEC | Local Event Concentrator
| Others |
| LEC | Local Exchange Carrier
| Others |
| LEC | Local Exchange Company
| Others |
| LEC | Lockheed Electronics Company
| Others |
| LEC | Lodge Executive Committee
| Others |
| LEC | Long Evans Cinnamon
| Others |
| LEC | Lotus Elan Central
| Others |
| LEC | Lotus Engineering Company
| Others |
| LEC | Lotus Europa Central
| Others |
| LEC | Low Emission Carbon
| Others |
| LEC | Low Emissions Certificate
| Others |
| LEC | Low Emitting Car
| Others |
| LEC | Low Entry Cab
| Others |
| LEC | Lower End Covered
| Others |
| LEC | Lower Esophageal Contractility
| Others |
| LEC | Lowest Effective Concentration
| Others |
| LEC | Lowest Evaluated Cost
| Others |
| LEC | Lumped Element Circulator
| Others |
| LEC | Lunar Equipment Conveyor
| Others |
| LEC | Lupus Erythematosus Cell
| Others |
| LEC | Lyonia Environmental Center
| Others |