Stephen James Blyth

Stephen James Blyth (born September 1967) is a British mathematician and academic. From October 2022 to September 2025 he was Principal of Lady Margaret Hall, Oxford. He had been Professor of the Practice of Statistics at Harvard University since 2012, and was also chief executive officer of the Harvard Management Company between January 2015 and July 2016.

Biography Blyth matriculated into Christ's College, Cambridge, in 1985 to study the Mathematical Tripos. He graduated with a first class honours Bachelor of Arts (BA) degree, His doctoral dissertation was titled "Local Regression Coefficients and the Correlation Curve" and his advisor was Kjell Doksum. His Doctor of Philosophy (PhD) degree was awarded in 1992. He took medical leave from 23 May 2016, On 23 October the Treasury Committee of the House of Commons approved his appointment.

Selected works