Ms Mary O'Neill > Maples Group > Dublin, Ireland > Lawyer Profile

Maples Group

Work Department



Mary is a partner of Maples and Calder’s Asset Finance team in the Maples Group’s Dublin office.  Mary advises private equity investors, operating lessors, financial institutions and airlines on a wide range of asset finance structures.  These include asset backed securitisations, aviation platform establishment, warehouse financings, portfolio asset sales & purchases, operating & finance lease structures as well as export credit agency facilities.  Mary has an extensive aviation industry background having worked in this sector for many years and brings a wealth of sectoral knowledge to her role.


Mary joined the Maples Group in 2014.  Prior to that, Mary spent nine years with Citibank in their international trade division (including a secondment to South Africa), most recently working on aviation export credit agency structures. Mary started her career at Biddle & Co. in London and also worked at a large Irish law firm prior to joining Citibank.

Mary is ranked by Chambers Global, with market commentators describing her as “responsive and knowledgeable“. Mary is also recognised as Highly Regarded by ILFR 1000 and as a Next Generation Partner by Legal 500.


Member of the Law Society of Ireland
Member of 100 Women in Finance


Trinity College Dublin, LLB, 1993
University of Cambridge, LLM, 1994
University of Cambridge, M. Phil, 1995
London School of Economics, M.Sc, 2004

Lawyer Rankings

Ireland > Asset finance

(Next Generation Partners)

Mary O’NeillMaples Group

Maples Group brings an additional international dimension to the aviation finance segment in Ireland, thanks to its strong asset finance expertise in London, Singapore and other key centres. The firm has an impressive client base of airlines, lenders, lessors and investors. Mary O’Neill is an experienced professional in asset–backed securitisations, portfolio asset sales and purchases, and operating and finance lease structures. She frequently works alongside London partner Donna Ager , who brings further international and Irish law expertise to the Dublin practice.