James Aiden O'Brien Quinn, QC (3 January 1932 – 28 December 2018) was an Irish-born lawyer and expatriate judge.
During his career, he served as a judge in Cameroon, the Seychelles, Kiribati, Solomon Islands, Botswana, and the United Kingdom.
From 1968 to 1972 he was Conseiller of the Cour Fédérale de Justice, Judge of the West Cameroon Supreme Court, Conseiller Technique (Harmonisation des Lois), at the Ministère de la Justice, Yaoundé, and Président of the Tribunal Administratif du Cameroun Occidental.
[2] After he was expelled from the Seychelles, O'Brien Quinn became Chief Justice of the Gilbert Islands (Kiribati from 1979), serving from 1977 to 1981, where he set up a new courts system.
O'Brien Quinn was made a Chevalier of the Ordre de la Valeur of the Republic of Cameroon in 1967, and received the Kiribati Independence Medal in 1979.