Winterthur (disambiguation)
Winterthur is a city in the Canton of Zürich, Switzerland.
Winterthur may also refer to:
- EHC Winterthur, an ice hockey team in Winterthur, Switzerland
 - FC Winterthur, a football club in Winterthur, Switzerland
 - Winterthur Group, a multinational insurance company originally founded in Winterthur, Switzerland
 - Winterthur Museum, Garden and Library, a museum in Winterthur, Delaware
 - Winterthur railway station, the main of ten railway stations in Winterthur, Switzerland
 - Orchester Musikkollegium Winterthur, an orchestra based in Winterthur, Switzerland