George H. Jessop was an Irish playwright, journalist and novelist. Born in Doory Hall, Ballymahon, County Longford in Ireland in 1852, he died in Hampstead, London in 1915. Jessop lived and worked in the United States for many years.
His numerous works included the opera Shamus O'Brien (written with Charles Villiers Stanford) and the novel Gerald Ffrench's Friends. He also contributed to the magazines Puck and Judge.
He was the brother of the Irish writer Mary Kathleen Jessop.