Arthur Cox


Ten Earlsfort Terrace
Dublin 2 D02 T380

+353 1 920 1000

+353 1 920 1020

Quick facts:

Number of partners: 100
Number of other fee earners: 550
Other offices: Belfast, London, New York, San Francisco
Languages: English, French, German, Spanish

Arthur Cox is one of Ireland’s leading law firms. For almost 100 years, it has been at the forefront of developments in the legal profession in Ireland. An international firm encompassing all aspects of corporate and business law, the firm has over 350 lawyers and a total staff of over 850 in offices in Dublin, Belfast, London, New York and San Francisco. 

The firm provides a comprehensive service to a diverse international and domestic client base. Clients include multinational organisations, banks and financial institutions, government departments, State entities and new players in emerging industry sectors.

Takes a client-centred approach and makes it a priority to understand our group and business. Impressive depth of knowledge across all practice areas relevant to our business and generally has a deep enough bench for even very sizable transactions.”

Very strong and reliable. Proactive and technically excellent.”

Great knowledge base, reputed firm, provides quick assistance in queries.”

“The team at Arthur Cox offers good legal advice, practical industry colour, and is cost-effective. No weaknesses come to mind.”

“Arthur Cox provide a consistent and excellent service.”

"Great to work with and outstanding in terms of delivery."

"Timely, thorough and excellent commercial advice."

"[The funds practice has] excellent depth of knowledge and industry contacts. Great turnaround times."

"It is clear that the firm has in the last couple of years invested in hiring and developing its associate bench to provide substantive backup to the partners."
"Very knowledgeable and provides excellent legal support."

"[Banking] services are delivered in a highly efficient, pragmatic manner. Responsiveness by Cox's to queries is of a very high standard, both in time and quality."

"They focus on the commercial outcome as opposed to the strict legal position and while they may advise that a particular course of action is not possible, they rarely do so without offering alternatives on how you might achieve your objectives."

"Most large law firms provide good legal advice, however, sound commercial guidance is not always as readily available and this is the difference between this and the other firms as far as I'm concerned."

Corporate / Commercial:
Geoff Moore, Cian McCourt

Mergers and acquisitions / Corporate Finance:
Ciarán Bolger, John Matson

Foreign Direct Investment:
John Menton, John Matson, Phil Cody

Commercial Property:
Kenneth Egan, Deirdre Barrett, Simon Hannigan

Litigation and Arbitration:
Eve Mulconry, Andy Lenny, Joanelle O'Cleirigh, Richard Willis

Fintan Clancy, Caroline Devlin

Competition and Regulated Markets:
Richard Ryan, Patrick Horan

Grainne Hennessy, Kathleen Garrett, Kevin Lynch, Ultan Shannon, David Molloy, Orla O’Connor, Niamh Quinn, Darragh Geraghty

Investment Funds:
Kevin Murphy, Tara O'Reilly, Sarah Cunniff, Dara Harrington, Cormac Commins, Ian Dillon, Siobhán McBean

Capital Markets:
Cormac Kissane, Glenn Butt, Aiden Small

Insolvency and Corporate Recovery:
William Day, John Donald

Technology and Innovation:
John Menton, Rob Corbet

Aaron Boyle, Alex McLean

Financial Regulatory:
Orla O’Connor, Robert Cain

Recent transactional highlights:

  • Allergan plc on its pending merger with AbbVie
  • Cognizant Technology Solutions Corp on its acquisition of Zenith Technologies
  • Ingersoll Rand on the $15 billion combination of its industrial business with Gardner Denver, the first Reverse Morris Trust involving an Irish company


  • Asset Management & Investment Funds
  • Banking & Finance
  • Capital Markets
  • Communications: Telecoms and Broadcasting
  • Competition & Regulated Markets
  • Construction
  • Corporate M&A
  • Cyber Security
  • Employment & Employee Benefits
  • Energy & Natural Resources
  • Environment & Planning
  • FinTech
  • Food & Drink
  • Insurance & Reinsurance
  • Intellectual Property
  • FDI
  • Life Sciences & Pharmaceuticals
  • Litigation & Dispute Resolution
  • Media & Telecommunications
  • Pensions
  • Procurement
  • Projects & Infrastructure
  • Public Law
  • Real Estate
  • Restructuring & Insolvency
  • Sports Law
  • Tax
  • Technology & Innovation

Victoria House
Gloucester Street
Northern Ireland
T: + 44 28 9023 0007
F: + 44 28 9023 3464

12 Gough Square
United Kingdom
T: +44 207 832 0200
F: +44 207 832 0201

Arthur Cox
One Rockefeller Plaza
15th Floor
New York NY 10020
T: +1 212 782 3294
F: +1 212 782 3295

10th Floor
315 Montgomery Street
San Francisco, 94104
T: +1 415 829 4247
F: +1 415 829 4304