The D'Aeth Baronetcy, of Knowlton in the County of Kent, was a title in the Baronetage of Great Britain.
The baronetcy was created on 16 July 1716 for Thomas D'Aeth, Member of Parliament for Canterbury and Sandwich. He was the husband of Elizabeth Narborough, daughter of Rear-Admiral Sir John Narborough, who had become heir of her father on the early death of her two brothers (see Narborough Baronets).[1] Through this marriage the Narborough family seat of Knowlton Court came into the D'Aeth family. The title became extinct on the death of the third Baronet in 1808.The family seat was Knowlton Court, Kent.