LDC may refer to:
- Least Developed Countries or Less developed country
- Lyon Dubai City
- Linley's Dungeon Crawl, a Roguelike role-playing game
- Long Distance Code of Reed-Solomon code
- Leonardo DiCaprio
- Load Duration Curve
- Linguistic Data Consortium
- Lower Division Clerk, another division in Clerk Position
- Louisiana Department of Corrections (now Louisiana Department of Public Safety & Corrections)
- LDC (société), member of the CAC Mid 100
- LLVM D Compiler, D (programming language) compiler using LLVM backend
- Large diaphragm condenser (Audio terminology) Microphone
- Local distribution company