Niall Naessens was born in Dublin in 1961. He is a graduate of the National College of Art and Design. He has a long association with the Graphic Studio Dublin and was a director between 2001 and 2006. He more recently set up, and now manages, Cló Cill Rialaig (print workshop) on behalf of the Cill Rialaig Project. Although primarily a printmaker he also paints. He is a figurative landscape artist with a particular interest in the sea. Naessens now lives in Brandon in West Kerry with his wife and family.
His work is in many collections including the Bank of Ireland, the Contemporary Art Society of Ireland, Chester Beatty Library, National Gallery of Ireland, Northern Bank, Office of Public Works, Hilton Hotel and Dublin City University. He has been commissioned by University College Dublin, Dublin Port and the Department of Foreign Affairs amongst others.