Sir William Spring, 2nd Baronet (May 1642 – 30 April 1684) was an English Whig politician who was a Member of Parliament for Suffolk from 1679 until his death in 1684.

The Earl of Shaftesbury classed him as an "honest" opponent of James, Duke of York inheriting the throne.

[1] Although he moved away from his father's Puritan beliefs, Spring opposed the increasing Catholicisation of the Church of England over his lifetime.

On 14 February 1681, after he and Sir Samuel Barnardiston had been unanimously elected, an address was presented to them from the freeholders of the constituency, thanking them for their "zeal for the Protestant religion, your loyalty to his Majesty’s person and government, and your endeavours for the preservation of our laws, rights and liberties" and urging them to continue their support of exclusion.

On 3 February 1667, he married secondly Sarah, daughter of Sir Robert Cordell, 1st Baronet of Melford Hall, Suffolk and together they had three children:[2]