Charles Kean O'Hara OBE JP (1860–7 August 1947) was a land owner and member of a distinguished family in Ireland.
He served as the last Lord Lieutenant of Sligo and Custos Rotulorum from 1902 to 1922.
He served in the army with rank of major in 3rd Battalion Yorkshire and Lancaster Regiment.
[citation needed] O'Hara was a farmer, land owner and polo player for Sligo; he was president of the Co. Sligo Agricultural Show Society and an animal exhibitor.
He died at the family property, Annaghmore, Collooney, Co. Sligo, on 7 August 1947.