Close to Nemenčinė forest was planted which forms a sentence Žalgiris 600 (commemorating the Battle of Grunwald) visible from the air.

[1] Other versions of the name include Niemenczyn in Polish, Неменчын in Belarusian, Неменчине (or Нямянчине) in Russian, Nementschine in German and Nementchin (נעמענטשין) in Yiddish.

In a 1434 document Andrius Sakaitis, one of the most influential Lithuanian nobleman families during the reign of Grand Duke of Lithuania Casimir IV Jagiellon, listed Nemenčinė as his domain.

In 1613, the town was marked on the map of the Grand Duchy of Lithuania – Magni Ducatus Lithuaniae, et Regionum Adiacentium exacta Descriptio printed in Amsterdam and financed by the Lithuanian magnate Mikalojus Kristupas Radvila Našlaitėlis.

It also has a partnership agreement with Poland's West Pomeranian Voivodeship, signed in Vilnius on 19 June 2009.