Sir Nicholas Throckmorton or Carew (died February 1644) was an English landowner and politician who sat in the House of Commons in two parliaments between 1601 and 1622.
His father died when he was still a child and he was left £500 and a half share in the salt monopoly.
His mother died in 1587 and left him jewellery and household goods - despite using her name frequently, he was passed over under male-line primogeniture by a grant of the manors of Beddington and Coulsdon, Surrey by Elizabeth in 1589 to kinsman Sir Edward Darcy.
He wrote to More for financial assistance in 1604, "which if I cannot have I must leave my country, and my wife and children to the parish.
He was the brother of Arthur Throckmorton and of Elizabeth, who married Sir Walter Raleigh.