Pendolino

alt=|thumb|An ETR 600 high-speed train, operated by [[Trenitalia in 2023]] Pendolino (from Italian "pendulum", and -ino, a diminutive suffix) is an Italian family of high-speed tilting trains (and non-tilting) used in Italy, Spain, Germany, Poland, Portugal, Slovenia, Finland, the Czech Republic, Slovakia (Czech railways are operating), the UK, the US, Switzerland, China, and Greece. It was also used in Russia from December 12, 2010, until March 26, 2022. Based on the design of the Italian ETR 401, it was further developed and manufactured by Fiat Ferroviaria, which was later acquired by Alstom in 2000.

The idea of a tilting train became popular in the 1960s and 1970s, when various rail operators, impressed by the high-speed rail services being introduced in France and Japan, wondered how they could similarly speed up travel without building a dedicated parallel rail network (as those two countries were doing). By tilting, the train could go around curves designed for slower trains at higher speeds without causing undue discomfort to passengers. Another example of a tilting train, successive to the Pendolino, was the British Rail Class 370.