The I'Anson baronetcy, of Birchfield in the County of York, was a title in the Baronetage of Great Britain. It was created on 17 June 1791 for Thomas I'Anson, a wealthy merchant and landowner.
Sir Thomas I'Anson was the only holder of the title. He died without male issue in 1799, at which point the baronetcy became extinct.
- Sir Thomas I'Anson, 1st Baronet (c. 1751–1799)