The Rees Baronetcy, of Aylwards Chase in the County of Middlesex, was a title in the Baronetage of the United Kingdom. It was created on 8 May 1919 for Sir J. D. Rees, in honour of parliamentary and public services. He was succeeded by his son, the second Baronet. He was a diplomat, writer and painter. The title became extinct on his death in 1970.