Sir David Cecil, JP (c. 1460 – c. 1540) was a Welsh landowner, courtier, and Member of Parliament.
He is noted as a paternal-line ancestor of the Cecil family which later attained prominence and rose to the peerage, including the extant marquessates of Exeter and Salisbury.
He was born into a Welsh family, the third son of Richard Cecil ap Philip Seisyllt of Alt-yr-Ynys on the border of Herefordshire and Monmouthshire, but settled near Stamford, Lincolnshire.
He was a serjeant-at-arms from 1513 to his death and appointed Justice of the Peace (J.P.) for Rutland from 1532 and High Sheriff of Northamptonshire from June 1532 to November 1533.
He probably died in September 1540 and was buried in St George's Church, Stamford.