Henry Eustace Guinness (22 September 1897 – 19 February 1972) was an Irish banker and politician.
He was educated at Winchester College, in Hampshire, England.
He fought in World War I and gained the rank of Lieutenant in the service of the Royal Artillery.
In addition, he was a partner and later of managing director of Guinness & Mahon bank.
Guinness was nominated by the Taoiseach, John A. Costello in 1954 to the 8th Seanad.