Arthur Cox Northern Ireland

Arthur Cox is an Irish law firm founded in 1920 that provides strategic legal counsel on complex corporate transactions, regulatory matters, mergers and acquisitions, and transformative deals for businesses in Ireland and internationally. The firm employs nearly 900 people across five offices in Dublin, Belfast, London, New York and San Francisco, and combines local expertise with reach into Europe and the United States. Its Northern Ireland practice is based in Belfast.

The firm's work spans several practice areas. Corporate and M&A advisory covers intricate corporate transactions, major mergers and acquisitions, and large-scale deals. Regulatory counsel advises organisations navigating complex and uncertain regulatory landscapes. Sector-specific practices include renewable energy, where the firm undertakes legal work on projects and transactions, and technology, where it acts for technology-sector clients and on technology-driven business matters. The stated emphasis is on shaping commercial outcomes rather than merely interpreting law.

Arthur Cox reports investing in training programmes for its people and in technology applied to legal service delivery, alongside a commitment to sustainable business practices. The firm describes itself as progressive in outlook since its founding and has been recognised among Ireland's leading law firms and among Europe's most innovative firms. Industry verticals covered include legal services, corporate law, mergers and acquisitions, renewable energy and technology.