| Office: | Senator |
| Term Start: | 14 December 1961 |
| Term End: | 23 June 1965 |
| Constituency: | Administrative Panel |
| Birth Date: | 1898 |
| Birth Place: | Cork, Ireland |
| Death Place: | Cork, Ireland |
| Party: | Labour Party |
| Children: | Barry Desmond |
Cornelius Desmond (1898 – 31 October 1974) was an Irish politician and trade union official. He was a Labour Party member of Seanad Éireann from 1961 to 1965 and Lord Mayor of Cork from 1965 to 1966. He was an unsuccessful candidate in a Dáil Éireann by-election on 2 August 1956 for the Cork Borough constituency.[1] but was elected to the 10th Seanad in 1961 by the Administrative Panel.[2] He lost his seat at the 1965 Seanad election.[2]
His son, Barry Desmond, went on to have a prominent career as a Labour Party politician, serving as a cabinet minister, MEP, and member of the European Court of Auditors.