Theodore "Theo" McNab (1940–2015) was an Irish painter, known for his minimalist landscapes.
[3] McNab never received formal artistic training, being largely self-taught.
His works often depict grid structures, similar to Charles Tyrrell.
He won the Scott Tallon Walker Prize at the Oireachtas Exhibition in 1976.
[4] His work is at the Irish Museum of Modern Art,[5] the Hugh Lane Gallery , and the University of Limerick's collection.