Denis O'Brien
Irish businessman · Ireland · On the map · Founders · Born 1958 · age 68
Denis O'Brien is an Irish billionaire businessman, and the founder and owner of Digicel. He was listed among the World's Top 200 Billionaires in 2015 and was Ireland's richest native-born citizen for several years.
Denis O'Brien is read about 137 times a day, in 6 languages.
A typical day, 30 days to 9 November 2026
The middle day of the days counted, so one week of news cannot move it. The line under it is the last 145 days, one point a day.
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His business interests have also extended to aircraft leasing, utilities support (Actavo), petroleum, football, and healthcare. As former chairman of the Esat Digifone consortium, O'Brien was questioned by the Moriarty Tribunal, which investigated the awarding of a mobile phone licence to Esat, among other things.
