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. John Collison, leads as the 1st in Ireland, with $17.49B in Technology sector. Followed by Patrick Collison, 2nd in Ireland, making waves in Technology at 149th globally, and John Grayken, 3rd in Ireland, contributing significantly to Finance & Investments at 484th globally.

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List of Top Billionaires in Ireland Today (1st April 2026)

Last updated - 1 April 2026

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Rank

Name

Global Rank

Net Worth

1

John Collison

149

$17.49 B

1

Patrick Collison

Patrick Collison

149

$17.49 B

3

John Grayken

484

$7.48 B

4

Shapoor Mistry

745

$5.41 B

5

John Dorrance III

John Dorrance III

1278

$3.20 B

6

Denis O'Brien

1317

$3.12 B

7

Zahan Mistry

1507

$2.70 B

7

Firoz Mistry

1507

$2.70 B

9

Eugene Murtagh

1619

$2.50 B

10

Dermot Desmond

1770

$2.29 B

11

Jim Thompson & family

Jim Thompson & family

1855

$2.19 B

11

John Armitage

1856

$2.19 B

13

Philip O'Doherty

Philip O'Doherty

2189

$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 83 , 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 35 years old.

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