Sir John Bernard Pethica (born 1953) is a British chemist and Science Foundation Ireland (S.F.I.)
John Pethica was a pupil at St Ambrose College, Trafford, Manchester.
In February 2005, it was announced that Pethica will be the director of the Naughton Institute which will house CRANN, a new purpose built nanotechnology centre in Trinity College Dublin.
[citation needed] In 1999, Pethica was elected a Fellow of the Royal Society (FRS).
[4][5] Pethica is an accomplished musician - playing violin and other instruments - with a particular interest in Irish and British folk music.