| Office: | Senator |
| Term Start: | 22 July 1954 |
| Term End: | 22 May 1957 |
| Constituency: | Nominated by the Taoiseach |
| Birth Date: | 25 July 1891 |
| Birth Place: | Dublin, Ireland |
| Death Place: | Monze, Zambia |
| Party: | Independent |
| Alma Mater: | University College Dublin |
| Education: | Belvedere College |
Arthur Conor Joseph Cox (25 July 1891 – 11 June 1965) was an Irish solicitor, politician and priest.[1]
Cox was born on 25 July 1891 in Dublin, to Michael Cox, a medical doctor, and Elizabeth Cox (née Nolan).[2]
He studied at Belvedere College and University College Dublin (UCD), where he graduated in 1913.[1] As a student at UCD, he served as Auditor of the Literary and Historical Society from 1912 to 1913.[3] During his time at university he came to know many who later took leading positions in the Irish Free State.
From 1915 onwards, he practised as a solicitor in Ireland, and in 1920 established the legal firm which still bears his name.[1]
He was nominated by the Taoiseach to the 8th Seanad in 1954.[4] He lost his seat at the 1957 Seanad election.[4]
In 1940, he married Brigid O'Higgins (née Cole), the widow of his friend Kevin O'Higgins.[2] She died in 1961, and he was ordained a priest in 1963.[2] He went on a mission to Zambia where he died in a motor accident in 1965.[1]