Tony Rominger (born 27 March 1961 in Vejle, Denmark) is a Swiss former professional road racing cyclist who won the Vuelta a España in 1992, 1993 and 1994 and the Giro d'Italia in 1995.
He began cycling late, allegedly spurred by competition with his brother. Rominger's strengths were time-trialling, climbing and recuperation.
He was a challenger to Miguel Indurain in the Tour de France, placing second in 1993 and winning the polka dot jersey. His three wins in the Vuelta were a record at the time. In 2005, Roberto Heras broke that record but two months later tested positive for the blood-boosting drug EPO and was disqualified. Heras' win has since been reinstated.
In 1994 Rominger broke the world hour record twice in a few days. He used Bordeaux velodrome to ride 53.832 km and then 55.291 km, although a track novice.
He retired in 1997 after breaking his collarbone at that year's Tour de France. He is the agent of Austrian racing cyclist Matthias Brändle.