Tony Martin (born 23 April 1985) is a German professional road bicycle racer riding for the UCI WorldTeam Team Katusha–Alpecin. Martin is known as a time trial specialist, and is a four-time world champion in the discipline, having won the title in 2011, 2012, 2013 and 2016. He also won a silver medal at the 2012 Summer Olympics in London, finishing runner-up to Bradley Wiggins in the event.
Martin has also been a part of three world championship-winning team time trial squads with Omega Pharma–Quick-Step/Etixx–Quick-Step, in 2012, 2013 and 2016. Martin has also won five Grand Tour individual time trial stages; three at the Tour de France in 2011, 2013 and 2014, and two at the Vuelta a España in 2011 and in 2014. He has also won several stage races, including the Eneco Tour (2010), Paris–Nice (2011) and the first two editions of the Tour of Beijing in 2011 and 2012.