Leffler
Leffler may refer to:
- Anne Charlotte Leffler, Swedish author
- Edward G. Leffler, salesman who started the first mutual fund
- Gösta Mittag-Leffler, Swedish mathematician
- Greg Leffler, former driver in the CART Championship Car series
- Isaac Leffler, represented Virginia's 18th congressional district in the US House of Representatives in the 1820s
- Jason Leffler, NASCAR/Indy Car driver from Long Beach, California
- John Leffler, former Australian racing driver
- Marta Leffler, American actress better known as Marta Linden
- Melvyn P. Leffler, American historian, and Edward Stettinius Professor of History at the University of Virginia
- Samuel J Leffler, computer scientist, known for his extensive work on BSD, from the 1980s to FreeBSD in the present day
- Shepherd Leffler, one of the two original U.S. Representatives from Iowa
