Nozawa was the official dub-over artist of Al Pacino and Alain Delon.

Also he was known for voicing Giuliano Gemma, Robert Redford, Bruce Willis (Especially for John McClane in the Die Hard franchise), Dustin Hoffman, Christopher Walken, David McCallum (Especially for Illya Kuryakin in the television series The Man from U.N.C.L.E.

), C-3PO (in the Star Wars Trilogy) and Don Johnson (in the television series Nash Bridges).

He was also the first dub-over voice of Willem Dafoe and James Woods in their early days.

On October 30, 2010, at 3:36 P.M., Nozawa died at a Tokyo hospital of lung cancer.