Ireland Top Companies List by Market Cap in August 2026

Eaton Corporation is Ireland based Power Management Company that provides products and services help their customers effectively manage electrical, hydraulic and mechanical power more reliably, efficiently, safely. They had over 98,000 employees, doing business in more than 175 countries. Their energy-efficient products and services help customers effectively manage electrical, hydraulic and mechanical power more reliably, efficiently, safely and sustainably. By giving people tools to use power more efficiently.

Accenture is Software and IT Company with headquarters is in Dublin, Ireland. Accenture has expertise across more than 40 industries in delivering Software and Technology services.

Key business segments of Accenture:

Allergan is Pharmaceutical and Healthcare company with headquarters is in Dublin, Ireland. As on 2019, Allergan has 17,400 employees and they serve across 100 nations.

Allergan is focused on developing, manufacturing and commercializing branded pharmaceutical, device, biologic, surgical and regenerative medicine products for patients around the world.

In 2020, AbbVie acquired Allergan for 63 billion USD.

TRANE TECHNOLOGIES PLC is industrial machinery manufacturing company with headquarters is in Ireland.

CRH is a global diversified building materials group employing over 80,000 people at 3,600 locations worldwide with headquarters is in Dublin, Ireland.

Experian is Credit Reporting Agency company with headquarters is in Dublin, Ireland. They Employe 16500 people across 39 countries. They provide mainly services in North America, Latin America, the UK, Europe, the Middle East, Africa, and Asia Pacific. While Banks giving loans and credit cards to individuals and companies, generally they will verify credit report from companies like Experian and based on credit score that they will decide whether loans can be given or not.

Horizon Therapeutics is a Pharmaceutical company with headquarters is in Ireland.

Amgen acquired Horizon Therapeutics for 27.8 billion USD in Oct-2023.

Low cost airline company with headquarters is in Dublin, Ireland.

AIB is a Banking and Financial Services company operating mainly in Ireland and the United Kingdom. They provide services to retail, business and corporate customers, with market-leading positions in key segments. Headquarters is in Dublin, Ireland.

As on 2019, they have over 2.8 million customers.

As on 2019, they have 9,520 employees and 325 branches across Ireland and UK.

As on 2019, they have annual revenue of 2,655 Million EUR and Net Income of 327 Million EUR.

As on Jul-2022, AIB GROUP has 170 branches.

STERIS is a leading provider of infection prevention and other procedural products and services. The company is focused primarily on healthcare, pharmaceutical and medical device Customers. Headquarters is in Dublin, Ireland.

Building Materials and Solutions Developing and Manufacturing Company with headquarters is in Ireland. It is the global leader in high performance insulation and building envelope solutions. Improving building performance, construction methods and ultimately people's lives. They have 13,000 plus employees as on 2019 and they operate across 70 plus countries.

Bank of Ireland is Commercial Bank with headquarters is in Dublin, Ireland. They have around 10,500 employees.

James Hardie is a global leader in the production of interior and exterior building products, generating more than $2.5 billion in net sales and employing more than 4,900 people across operations in North America, Australia, New Zealand, the Philippines, and Europe.

Headquarters is in Ireland.

Flutter Entertainment is a global sports betting, gaming and entertainment provider for over 13 million customers world wide. The company is having an international brands and operations, sky bet, fan duel, TVG, fox bet etc. It supports and operate the world's most innovative games. It is the most vibrant retail estates in the sector of betting. It is public limited company provides mobile and online service.

The headquarters is in Ireland.

Food and Beverages sector company with headquarters is in Dublin, Ireland. Packaged Food Products related company which is involved in supplying a diverse range of brands and private label food products to major markets across the UK and Ireland, it had structured their business into three main market segments, Dairy, Meat & Savoury and Meal Solutions.

ICON is a global provider of outsourced development services to the pharmaceutical, biotechnology and medical device industries. They have 13,680 employees in 37 countries across 37 countries

Software and Technology company related to automobile industry with headquarters is in Dublin, Ireland. Aptiv is a global technology company that develops safer, greener and more connected solutions enabling the future of mobility. Aptiv company team and technology helped complete the longest automated vehicle drive ever – traveling nearly 3,400 miles from San Francisco to New York City, with 99 percent of the drive in fully automated mode.