Floyd Landis (born October 14, 1975) is an American cyclist, from California. He currently rides for UCI Continental team OUCH Pro Cycling Team. He is an all-around rider, with special skills in climbing and time-trialing, and is extremely good on the descent. Landis turned professional in 1999 with the Mercury Cycling Team. He joined the US Postal Service team in 2002, and moved to the Phonak Hearing Systems team in 2005.

In 2006, Landis won the first edition of the Tour of California, before going on to finish first in the 2006 Tour de France. He was stripped of his Tour de France victory and fired from the Phonak team after a drug-control test suggested the presence of a skewed testosterone/epitestosterone ratio during Stage 17.

Landis maintained his innocence, and he mounted a vigorous defense. Although Landis' legal team documented inconsistencies in the handling and evaluation of his urine samples, the disqualification was upheld.