Walter Halliday (also spelled Haliday, Halyday, and Holliday) was a long-serving royal minstrel in England in the 15th century. He was a founder member of a minstrels' guild which was the forerunner of the present Worshipful Company of Musicians. He is believed to be the founding father of the Halliday family of Gloucestershire, and an ancestor of some of the Halliday/ Holladay/ Holliday/ Hollyday families in the United States of America.