Adam Nagaitis was born and raised in Chorley, Lancashire. At the age of 19, Adam left the UK to study acting at the Stella Adler Conservatory in New York. Adam stayed there for several years and began a Shakespeare Theatre Company.

Following this, Adam returned to the UK to study at RADA, where he was awarded the 2012 Carleton Hobbs Award for BBC Radio Drama, as well as the Laurence Olivier Bursary Award. Out of RADA, Adam was offered a role in Yann Demanges' first feature film, the BIFA-winning and BAFTA nominated '71.