# Denis O'Brien

_Irish businessman_

Canonical: https://diginpl.com/people/denis-o-brien
Last updated: 2026-10-31

> Denis O'Brien (born 19 April 1958) 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. His business interests have also extended to aircraft leasing (Aergo Capital), utilities support (Actavo), petroleum (Topaz Energy), football (a minority shareholder of Celtic F.C.), and healthcare (Beacon Hospital). 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.

## Quick facts

- **Born:** 19 April 1958 ([Wikidata](https://www.wikidata.org/wiki/Q3022849#P569))
- **Place of birth:** Cork ([Wikidata](https://www.wikidata.org/wiki/Q3022849#P19))
- **Citizenship:** Ireland ([Wikidata](https://www.wikidata.org/wiki/Q3022849#P27))
- **Occupation:** businessperson; entrepreneur ([Wikidata](https://www.wikidata.org/wiki/Q3022849#P106))
- **Education:** University College Dublin; Boston College; The High School, Dublin ([Wikidata](https://www.wikidata.org/wiki/Q3022849#P69))
- **Positions held:** founder (since 2001); chairperson (since 2001); founder (since 1989) ([Wikidata](https://www.wikidata.org/wiki/Q3022849#P39))
- **Awards:** Order of Jamaica; National Order of Honour and Merit ([Wikidata](https://www.wikidata.org/wiki/Q3022849#P166))

## About

In 2021, O'Brien sold his stake in Communicorp and the Pacific operations of Digicel. O'Brien engages in various philanthropic activities, including being on the board of Concern Worldwide, founding the Iris O'Brien Foundation and establishing a fellowship at Boston College. In 2019, O'Brien earned the Award for Outstanding Achievement from the Irish-US Council.

## Questions

**When was Denis O'Brien born?**  
Denis O'Brien was born on 19 April 1958 in Cork.

**What positions has Denis O'Brien held?**  
Positions held by Denis O'Brien include: founder (since 2001); chairperson (since 2001); founder (since 1989).

**Where did Denis O'Brien study?**  
Denis O'Brien was educated at University College Dublin, Boston College, The High School, Dublin.

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## Sources

- [Wikipedia (English): Denis O'Brien](https://en.wikipedia.org/wiki/Denis_O'Brien) — [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)
- [Wikidata item Q3022849](https://www.wikidata.org/wiki/Q3022849) — [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/)
- [Image: Denis O'Brien 2014.jpg by ITU/M.Jacobson-Gonzalez (CC BY 2.0)](https://commons.wikimedia.org/wiki/File:Denis_O%27Brien_2014.jpg)

## Licence and attribution

Text from the Wikipedia article Denis O'Brien, licensed under CC BY-SA 4.0. This page's text is shared under the same licence. Facts from Wikidata (CC0). Image: Denis O'Brien 2014.jpg — ITU/M.Jacobson-Gonzalez, CC BY 2.0.

## Cite this page

"Denis O'Brien". DigiNepal. Last updated 31 October 2026. https://diginpl.com/people/denis-o-brien. Retrieved 6 November 2026.