Conn R. Ó Cléirigh (7 February 1927 - 30 April 1995) was an Irish Professor of Linguistics.
[1] Ó Cléirigh received a BA in Celtic Studies in 1949 from University College Dublin.
At the University of Zurich he studied Celtic philology and the Germanic, Indo-European, Indo-Iranian, and Hittite languages.
He studied under Julius Pokorny and later wrote his obituary in Celtica (journal).
A Festschrift was published in his honour titled 'Dán do oide: essays in memory of Conn R. Ó Cléirigh, 1927–1995'.