Boetius Clancy or MacClancy (died April 1598) was a 16th-century Irish landowner, MP and High Sheriff.
He was born in Co Clare, the son of Hugh Clancy, and was the great-grandson of Murtagh MacClancy of Cnoc-Finn (Knockfin). The MacClancy family were the hereditary lawyers or brehons of Thomond. Boetius was well educated and fluent in Latin and English. He inherited and lived at the family seat, the castle at Knockfin, near the famous law school in the parish of Killilagh in County Clare.
In that year (1588) the Spanish Armada was trying to make its way home through severe storms off the west coast of Ireland and many ships were wrecked or abandoned. Clancy had been advised by William Fitzwilliam, the Lord Deputy that "… we authorise you to make inquiry by all good means, both by oath and otherwise, to take all the hulls of ships, stores, treasures, etc. into your hands and to apprehend and execute all Spaniards found there of what quality so ever. Torture may be used in prosecuting this inquiry". In September two large galleons, the San Marcos and the San Esteban, were wrecked on the Clare coast. A reported 170 (or 70) Spanish crew survived but were promptly rounded up and imprisoned on Clancy's orders. They were subsequently tortured and hung on a nearby hill not far from Doonagore Castle now known as Cnoc na Crocaire, or Hangman's Hill and the bodies buried in a mass grave nearby. Clancy also either managed to salvage from the wreck an elaborately carved table or had it manufactured from some of the wreck's timbers. It is now known as the Armada table and kept on show at Bunratty Castle.
He died April, 1598, leaving a son, Murtough Clancy.
- "The History and Topography of the County of Clare". Clare County Library. Retrieved 2011-05-09.
- "The Spanish Armada and the fate of some of its ships off the west Clare coast". Clare County Library. Retrieved 2011-05-09.
- "In search of a doomed Portuguese galleon". Clare Champion. Retrieved 15 October 2016.
- "Notes on the Sheriffs of County Clare, 1570-1700". Retrieved 2011-05-09.