Born on 23 November 1928 in Aukštadvaris (Rokiškis district), died on 17 February 2004 in Vilnius.
He attended Vilkija Gymnasium, studied Lithuanian philology at Kaunas and Vilnius universities. From 1952 to 2002 he worked at the Institute of Lithuanian Literature and Folklore as a post-graduate student, junior researcher, senior researcher, head of the Department of Contemporary Literature, and chairman of the Institute's Council. V. Kubilius was the founder of the Charter of Lithuanian Citizens, a member of the Restorative Senate and the Senate of Vytautas Magnus University, head of the Department of Lithuanian Literature (1992-1995). His significant scientific publications have been published in Latvia, Estonia, Hungary, Russia, Poland, Germany, Russia and elsewhere.