- LTV Steel Company-Cleveland Works
- Lu (Lucy) Yan
- Lu Dai
- Lu Dai
- Luc Devroye
- Luc Van Hamme
- Luca Accorsi
- Luca Mingardi
- Lucas J Martin
- Lucas Nathan
- Lucas Veelenturf
- Lucent Technologies
- Lucia Roselli
- Luciano Ieraci
- Lucius Riccio
- Ludovic Leclercq
- Ludwig Kuntz
- Luigi Moccia
- Luis Costa
- Luis de los Santos Cayetano
