Aidan Walsh has an international reach to his experience and knowledge.
In 1980, as Curator of Monaghan County Museum, Ireland, he was awarded the Council of Europe Museum Prize.
In 1989 he was invited to sit on the Brussels-based EU Committee for Cultural Heritage.
In 1997 he was also invited by the Council of Europe to join a team of experts, which reviewed the Cultural Policy of Lithuania.
From 1999-2001 he sat on the Reform Task Force of the International Council of Museums (ICOM), the UNESCO non-governmental organisation, based in Paris. The Task Force undertook a root-and-branch review, which lead to significant strategic change within ICOM.
He also served two terms on the Executive of INTERCOM, the International Committee for Management in Museums.
He was Chairman of the Irish branch of the International Council of Museums and chaired its UK branch when he was based in Belfast.
From 1992-1996, he represented Ireland on the Network of European Museum Organisations (NEMO).