Sir William D'Oyly, 1st Baronet (c. 1614 – November 1677) was an English politician who sat in the House of Commons variously between 1654 and 1677.
He succeeded to the estates of his uncle Henry, and was known as Sir William, the elder.
As heir to Susan D'Oyly, his cousin, he came into possession of Pond-hall (Hadleigh), Topsfield, and Cossford, in Suffolk, and Shottisham (now more generally spelled Shotesham), Gostlings, and three manors in Warham, in Norfolk.
[1] At the end of the First English Civil War in 1646 D'Oyly was commanding a regiment of the Norfolk Trained Bands, though he was excluded at the time of Pride's Purge.
[1] He was re-elected MP for Great Yarmouth in 1661 for the Cavalier Parliament and sat until his death in 1677.