Theodora Llewelyn Davies (18 April 1898 – 21 December 1988) was a British barrister and penal reform campaigner.

She was the first woman to apply for admission to the British legal profession's Inner Temple in 1920 and one of the first to be admitted in November 1922.

John Llewelyn Davies, Rector of Christ Church, Marylebone, who was a strong advocate for women's education.

She studied law at London University for a year in 1916 when the First World War had created capacity with so many students away fighting.

[4][5][6][7][8] During the time that Llewelyn Davies was in college, the Sex Disqualification (Removal) Act began its procession through the houses of parliament which would allow women more equality with men in the legal profession.

The Inner Temple did not want to be legally forced to allow women to join and so before the legislation was completed, they opened the Bar voluntarily.

Her cousins Sir Malcolm Macnaghten and Theo Mathew, better known as the writer ‘O’, took on her training in the chambers.

The organisation's Seventh Annual Report, authored by Caroline Haslett noted "On more than one occasion during the year … [she] has given us the benefit of her advice, and our warm thanks are due to her for her kindly and practical help".