The Twisleton-Wykeham-Fiennes Baronetcy, of Banbury in the County of Oxford, is a title in the Baronetage of the United Kingdom.

It was created in the 1916 Birthday Honours for the Liberal politician and decorated military officer the Hon.

At the time of the creation, he was a major in the Oxfordshire Yeomanry serving in the First World War.

John Eustace Twisleton-Wykeham-Fiennes, died 18 June 1917 of wounds suffered in the Battle of Arras, where he was serving with the Gordon Highlanders.

[4] The second baronet married Audrey Joan Wilson, daughter of Sir Percy Newson, in 1931.