Mazars appoints Tom O’Brien as new Managing Partner

Tom O’Brien will lead the firm’s continued growth and expansion in Ireland, where the firm employs over 500 people in Dublin, Limerick and Galway.

Turnover has increased by 75% since 2015 at the fast-growing firm, which has expanded through a combination of organic growth and targeted acquisitions of other accountancy firms.

He joined Mazars in 2000 and has been Head of Advisory services since 2014. A Member of the Institute of Chartered Accountants in Ireland, Tom has extensive experience in insolvency, restructuring, corporate finance and advisory services and has advised many progressive privately owned Irish businesses on a range of issues such as acquisition opportunities, raising debt, restructuring, succession and reorganisation matters.

Commenting on his appointment as Managing Partner of Mazars, Tom O’Brien said; “I am delighted to be taking on this role at a really exciting time for the firm. Having grown our business throughout the pandemic, we are looking forward to supporting clients with new opportunities and challenges as business and the economy continues to open up.

“Our client-led approach, which focuses on high-quality professionals delivering value-added specialist services, has really resonated with the market, which now clearly sees Mazars as a true alternative to the traditional large players. We have ambitious growth plans, and I look forward to driving these plans while also developing other key strategic service lines and sectors”.

Mark and Tom

Pictured L to R: Tom O'Brien and Mark Kennedy

Mark Kennedy commented on the appointment, “It has been a privilege to lead Mazars in Ireland since 2015. I’m extremely proud of how the business has grown in recent years, how we have invested in our people and fostered a culture of diversity and inclusion. Mazars in Ireland is very well positioned to support clients with the range of new opportunities and challenges that we see in an increasingly dynamic business environment. Tom is an excellent leader and has developed our Advisory practice considerably in recent years. I am very pleased to be handing over to him and know that he will lead the firm to continued success”. 

Mazars in Ireland provides audit, accounting, consulting, financial advisory, outsourcing and tax services to large corporates, small and medium-sized indigenous businesses and private clients.