LDC
- D (programming language)
- Lady Doak College
- Lambert Dodard Chancereul
- Landlocked developing country
- Law Development Centre
- Leaders' Debates Commission
- Least developed country
- Legoland Discovery Centre
- Leonardo DiCaprio
- Less developed country
- Lidcombe railway station
- Linguistic Data Consortium
- Lloyds Development Capital
- Load duration curve
- Local distribution company
- Locally decodable code
- London Dumping Convention
- Louis Dreyfus Company
- Louisiana Department of Corrections
- Lysine decarboxylase