| Charles William O'Hara | |
| Office: | Member of Parliament for County Sligo |
| Term Start: | 13 May 1859 |
| Term End: | 17 July 1865 |
| Predecessor: | Robert Gore-Booth Edward Joshua Cooper |
| Successor: | Robert Gore-Booth Edward Henry Cooper |
| Alongside: | Robert Gore-Booth |
| Birth Date: | 1817 |
| Birthname: | Charles William Cooper |
| Nationality: | Irish |
| Party: | Conservative |
Charles William O'Hara (1817 – 20 May 1870),[1] known as Charles William Cooper until 27 November 1860, was an Irish Conservative politician.
He was educated at Trinity College Dublin.[2]
O'Hara was elected Conservative MP for County Sligo at the 1859 general election and held the seat until 1865 when he did not seek re-election.[3]
| Escutcheon: | Quarterly 1st & 4th Vert on a pale radiant Or a lion rampant Sable (O'Hara) 2nd & 3rd Gules on a bend between six lions rampant Or a crescent Sable (Cooper). |
| Crest: | 1st a demi lion rampant Ermine holding between the paws a chaplet of oak leaves Proper (O'Hara) 2nd a man's bust in profile couped at the shoulders Proper on the head an Irish crown Or and charged on the neck with a crescent Sablr overhead an escroll inscribed "Vinciy Amor Patriae" (Cooper). |
| Notes: | Granted 19 December 1860 by Sir John Berard Burke, Ulster King of Arms.[4] |
| Motto: | Virtute Et Claritate |