Top Billionaires in Ireland with Net Worth

Ireland

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Embark on an enriching exploration of Ireland's dynamic billionaire landscape, where visionaries from diverse industries shape economic prosperity. Patrick Collison, leads as the 1st in Ireland, with $17.49B in Technology sector. Followed by John Collison, 2nd in Ireland, making waves in Technology at 154th globally, and John Grayken, 3rd in Ireland, contributing significantly to Finance & Investments at 534th globally.

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List of Top Billionaires in Ireland Today (12th October 2026)

Last updated - 12 October 2026

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Rank

Name

Global Rank

Net Worth

1

John Collison

154

$17.49 B

1

Patrick Collison

Patrick Collison

154

$17.49 B

3

John Grayken

534

$7.48 B

4

Shapoor Mistry

838

$5.11 B

5

Eugene Murtagh

1324

$3.22 B

6

John Dorrance III

John Dorrance III

1333

$3.20 B

7

Denis O'Brien

1369

$3.09 B

8

Zahan Mistry

1620

$2.55 B

8

Firoz Mistry

1620

$2.55 B

10

Dermot Desmond

1848

$2.23 B

11

Jim Thompson & family

Jim Thompson & family

1867

$2.20 B

12

John Armitage

1879

$2.19 B

13

Philip O'Doherty

Philip O'Doherty

2231

$1.85 B

FAQs

Who is the richest person in Ireland, and what is their net worth?

The richest person in Ireland is Shapoor Mistry, with a net worth of 9.34 billion.

What is the primary industry of the majority of billionaires in the top list of billionaires in Ireland?

The majority of billionaires in the top list of Ireland are from the Finance & Investments industry.

Who is oldest in the Ireland's top billionaire list and what industry are they associated with?

Ireland's oldest billionaire in the top list is Eugene Murtagh aged 84 , associated with the Manufacturing industry.

How many industries are represented among the top billionaires in Ireland?

The top billionaires in Ireland come from 6 industries - Manufacturing, Food & Beverage, Finance & Investments, Telecom, Diversified, Technology

What percentage of the Ireland's top billionaires made their fortunes in the Finance & Investments sector?

33% of the top billionaires (3 out of 9) are from the Finance & Investments industry in Ireland.

Who is the youngest person in Ireland's top billionaires, and how old are they?

Ireland's youngest billionaire is John Collison, at 36 years old.

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