Environs of Sužionys were inhabited from the 1st millennium BC. Sužionys Hillfort [lt] with archaeological remains of an ancient settlement is situated near the village. Sužionys itself was mentioned for the first times in written sources in 1554. A modest neoclassical church, that is now standing, was built in 1795.
References
^"2011 census". Statistikos Departamentas (Lithuania). Retrieved July 28, 2019.