Sir Clement Cottrell-Dormer (1686–1758) was an English courtier and antiquary.

He was the son of Sir Charles Lodowick Cotterell (1654–1710), and his first wife Eliza, daughter of Nicholas Burwell of Gray's Inn.

The office of Master of the Ceremonies at the British court had been established by James I of England in 1603.

The Master's duties were to receive foreign dignitaries and present them to the monarch at court.

In 1734 he was described by Hearne as "a scholar and an antiquary, and well skill'd in matters of proceeding and ceremony".