Michael Angelo Hayes, RHA (25 July 1820 – 31 December 1877) was an Irish watercolourist who specialised in painting horses and military subjects.
He quickly gained a reputation for military subjects and others, in which horses took a prominent part, such as The Race for the Corinthian Cup at Punchestown, and Charge of the 3rd Light Dragoons at Moodkee.
He obtained a prize from the Irish Art Union for a set of drawings illustrating the ballad of Savourneen Deelish.
In spite of an unfortunate schism in the academy, Hayes retained the secretaryship, and published a pamphlet (Dublin, 1857) defending his position.
On 31 December 1877 he was accidentally drowned by falling into a tank on the top of his house at 4 Salem Place, Dublin.