Henrietta O'Neill

Henrietta O'Neill (1758 – September 1793) was an Irish poet.

The only daughter of Charles Boyle, Viscount Dungarvan and Susannah Hoare, she was born Henrietta Boyle. Her father died in 1759 and her mother later married Thomas Brudenell-Bruce. She married John O'Neill in 1777. O'Neill was a friend of the English novelist and poet Charlotte Smith. She was also an amateur actor.

Her best known poem was "Ode to the Poppy".

O'Neill died in Portugal in 1793.