L
- Lamb and Rich
- Charles Rollinson Lamb
- Thomas W. Lamb
- G. Albert Lansburgh
- Morris Lapidus
- Paul László
- John Latenser, Sr.
- Benjamin Latrobe
- John Lautner
- Ellis F. Lawrence
- Charles Downing Lay
- Napoleon LeBrun
- William Harold Lee
- Gene Leedy
- William Lescaze
- Daniel Libeskind
- Detlef Lienau
- Maya Lin
- Gordon W. Lloyd
- Robert Cary Long, Jr.
- Alexander Wadsworth Longfellow, Jr.
- Guy Lowell
- Charles Luckman
- Greg Lynn
Read more about this topic: List Of United States Architects