Creator
- Look & Morrison1
- Lopez, Francisco I.1
- Lopez, George1
- Lopez, Roberta1
- Lopez-Portillo y Lancaster-Jones, Rodrigo1
- Lorenz, Raymond J.1
- Louisville & Nashville Railroad1
- Lounsberry, Vernon L.1
- Loving Committed Network (Orlando, Fla.)1
- Lowry, Willie1
- Lucitt, Raymond1
- Lue, Gim Gong (1860-1925)1
- Lueders, William L.1
- Luna, Don Tristan de1
- Lupu, Nathan1
- Lux, Bessie Rumph Hiers1
- Lykes Bros., Inc.1
- Lyles, A.C. (Andrew Craddock Lyles, Jr.)1
- Lyren, Carl, 1925-20031
- M. Valle & Ca.1