莱什诺（波兰语：Leszno.德语：Lissa）是波兰大波兰省的一个镇。

Leszno [ˈlɛʂnɔ] (German:Lissa, between 1800 and 1918 also called Polnisch Lissa or Lissa in Posen) is a town in western Poland with 64,612 inhabitants (2014). Situated in the southern part of the Greater Poland Voivodeship since 1999, it was previously the capital of the Leszno Voivodeship (1975–1998). The town has county status.