- Long Zhao
- Longsheng Sun
- Loo Hay Lee
- Lorenz T. Beigler
- Lori Qingyuan Yue
- Lorin M. Hitt
- Loskesh Kalahsthi
- Lou Hafer
- Louis Anthony Cox, Jr
- Louis Dalberto
- Louis Eeckhoudt
- Louis J. Plebani
- Louis M. Goreux
- Louisiana Tech University Student Chapter
- Louisville Metropolitan Sewer District (MSD)
- Love Ekenberg
- Lt Col Jack A. Jackson
- Lt. Col. Brian L. Jones
- Lt. Col. John Andrew
- LtC (Ret) Jack Kloeber, Jr.
