The Treno Servizio Regionale (TSR) are a series of double-decker EMUs used by the Lombard railway company Trenord for the commuter services around Milan, and particularly for the suburban lines.

Each train is composed by several railcars; some of them have a cab and a wheelchair bay for disabled people (MCH), and some of them have neither (M).

The TSR were conceived by AnsaldoBreda and Firema as an evolution of the TAF-EMUs built in the 1990s.

The first unit was delivered to the railway company LeNord (later merged into Trenord) on 1 August 2006.

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