Mathilda Twomey (née Butler-Payette)[2] is a Seychellois lawyer and academic.

[6] She holds a degree in French law from the University of Paris-Sud, France;[7] and also a Bachelors of Arts degree in English and French Law which she obtained from the University of Kent, Canterbury, U.K.[6] She was admitted as a Member of the Bar at Middle Temple, London and as an attorney-at-law in Seychelles in 1987.

She holds a master's degree programme in Public Law from the National University of Ireland; and in 2015, she completed her Ph.D from the same institution.

[8] In 1987, Twomey started her career as a legal practitioner by first serving as a barrister in the Ocean Gate Law Centre.

[10] On 13 April 2011, she became the first female judge in Seychelles after she was sworn in as a non-resident judge;[10] and on 18 August 2015, she also became the first woman to be appointed Chief Judge of the Supreme Court of Seychelles after she was sworn in at the State House, Victoria, succeeding Frederick Egonda-Ntende.