L3C may refer to:
Low-profit limited liability company Level 3 Communications, a U.S. telco and ISP L-3 Communications, a U.S. satellite and aerospace company Aeronca L-3C, a WWII USAAC airplane
See also
13C LC3 (disambiguation) LCCC (disambiguation) LLLC (disambiguation) I3C (disambiguation)
LC (disambiguation)