Syanno

Syanno or Senno is a town in Vitebsk Region, Belarus. It serves as the administrative center of Syanno District. It is located southwest of Vitebsk on the southern shore of Senno Lake. In 2018, its population was 7,092. As of 2025, it has a population of 6,974.

== History == thumb|left|Early-20th-century view The village is first mentioned in a document of 1442. Fairs were held there, and a lively hay market gave it its name ( sena 'hay'). The town was repeatedly ravaged during the Muscovite–Lithuanian Wars in the 16th century. It was a private town of nobility, including the Sapieha, Korsak, Ważyński, Lubecki, Tyszkiewicz, Ogiński and Sierakowski families. It was administratively located in the Vitebsk Voivodeship of the Polish–Lithuanian Commonwealth. In 1609, the local landmark Holy Trinity church was founded by Eustachy Kurcz and Regina Kurcz, and then rebuilt in 1772 by the Ogińskis. In 1772, a relic of Saint Venantius Fortunatus, gifted by Pope Clement XIV to Prince Ogiński, was placed in the church.