Daniel O'Carroll (or O'Caroll) (died 4 November 1750) was a British Army officer who used the style of a baronet.
He was the son of John O'Carroll (died 12 August 1733) of Beaugh, County Galway, by his second wife Margaret Crean.
However, according to a pedigree published in the appendices of the 1723 edition of Geoffrey Keating's The General History of Ireland, he was "created by the King of Spain a knight of the most military Order of St. Jago, for singular services done to that crown in the time of war, [but] he left the said service of Spain in a disgust, and afterwards had by a patent from Queen Anne, the rank of knighthood.
The regiment was disbanded on 22 December 1711, and shortly thereafter he assumed the style of a baronet,[4] although there is no patent or other record of such a creation in either Great Britain or Ireland.
He was alive on 10 June 1777 for the marriage of his son and niece, John and Elizabeth, the daughter of the second baronet, but the date of his death is unknown.