Denis O'Brien (born 19 April 1958) is an Irish businessman who was listed among the World's Top 200 Billionaires in 2015 and is also Ireland's richest native-born citizen.
Denis O'Brien (born 19 April 1958) is an Irish businessman and the founder of Digicel. He was listed among the World's Top 200 Billionaires in 2015 and is also Ireland's richest native-born citizen.