David Neil Sedley FBA (born 30 May 1947) is a British philosopher and historian of philosophy.
He was the seventh Laurence Professor of Ancient Philosophy at Cambridge University.
Sedley was educated at Trinity College, Oxford where he was awarded a first class honours degree in Literae Humaniores in 1969.
He was awarded a PhD in 1974 by University College London for a text, translation and commentary on Book XXVIII of Epicurus' On Nature.
[citation needed] He was elected a Fellow of the British Academy in July 1994.