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Rank 1358 of 3,368

Denis O'Brien net worth

Denis O'Brien's net worth is estimated at $3.1 billion as of 15 Oct 2026, according to Forbes Real-Time Billionaires. The fortune comes mainly from Digicel.

Industry
Technology
Age
68
Self-made
Yes
City
Dublin
Source of wealth
Digicel

Latest estimate

$3.1B

As of 15 Oct 2026, Forbes Real-Time Billionaires

-$10M

-0.3%

vs Oct 2020

History
Technology setting, the industry behind this fortune
Technology, the industry behind this fortune. Illustration, not a photo of Denis O'Brien.

Denis's net worth over time

2 dated estimates since 2020

$0 $837M $2B $3B $3B 2021 2022 2023 2024 2025 2026 $3.1B, 1 Oct 2020, Forbes $3.1B, 15 Oct 2026, Forbes Real-Time Billionaires
As ofNet worthSource
15 Oct 2026$3.1B Forbes Real-Time Billionaires
1 Oct 2020$3.1B Forbes

About Denis O'Brien

Denis O'Brien (Ireland) has 2 dated net worth estimates in the public record, the latest $3.1 billion as of 15 Oct 2026 from Forbes Real-Time Billionaires. The fortune is tied to Digicel, which we classify under technology. Denis was born in 1958. The earliest estimate we hold, $3.1 billion, is dated 1 Oct 2020. That places Denis at number 1,358 in the current ranking.

Companies linked to Denis in the public record: Digicel, Aergo Capital, Bauer Media Audio Ireland, Actavo.

Sources

The description is written by BillionaireList editors from public facts. How estimates are made: methodology.

About Denis O'Brien, common questions

How much is Denis O'Brien worth?
Denis O'Brien's net worth is estimated at $3.1 billion as of 15 Oct 2026, according to Forbes Real-Time Billionaires. That places Denis at number 1358 in the BillionaireList ranking.

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