The Coates Baronetcy, of Haypark in the City of Belfast, is a title in the Baronetage of the United Kingdom (see also Milnes Coates Baronets, which is a separate Baronetcy in England and Coats Baronets, which is a separate Baronetcy in Scotland). It was created on 15 July 1921 for William Coates. He was a senior partner of William F. Coates & Co, stockbrokers, of Belfast, Lord Mayor of Belfast in 1920, 1921, 1922, 1929 and 1930 and a Member of the Senate of Northern Ireland. He was succeeded by his son, the second Baronet. He was a Brigadier in the Royal Tank Regiment. As of 2007 the title is held by his son, the third Baronet, who succeeded in 1994.