Biography
Denis O'Brien is a global billionaire ranked #1364 in real-time wealth indices, with investments in the Telecom sector.
Global Rank #1364TelecomSelf-Made
Denis O'Brien
Real Time Net Worth
$3.1 Billion
as of 7/2/26
Age
68
Source of Wealth
Telecom
Country
Ireland
Wealth Growth Timeline
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Key Companies Owned
- Telecom
Did You Know?
- •What is the source of Denis O'Brien's wealth? The primary source of wealth is Telecom.