Nicholas Fuller, English politician (b. 1543)
Sir Nicholas Fuller (1543 – 23 February 1620) was an English barrister and Member of Parliament. After studying at Christ's College, Cambridge, Fuller became a barrister of Gray's Inn. His legal career there began prosperously—he was employed by the Privy Council to examine witnesses—but was hampered later by his representation of the Puritans, a religious tendency which did not conform with the established Church of England. Fuller was repeatedly in contention with the ecclesiastical courts, including the Star Chamber and Court of High Commission, and was once expelled for the zeal with which he defended his client. In 1593 he was returned as the Member of Parliament for St Mawes, where he campaigned against the extension of recusancy laws. Outside of Parliament, he successfully brought a patents case which not only undermined the right of the Crown to issue patents but accurately predicted the attitude taken by the Statute of Monopolies two decades later.

Returned to Parliament in 1604 for the City of London, Fuller became considered the "leader of the opposition" due to his conflict with the government over policy, fighting the impositions on currants, the patent on blue starch, and opposing the proposed union with Scotland on legal and economic grounds. In 1607, in what became known as Fuller's Case, he again began challenging the Court of High Commission, and eventually got the Court of Common Pleas under Sir Edward Coke to agree that the common law courts had the power to free imprisoned ecclesiastical prisoners. These encounters with the ecclesiastical courts were described as "bruising", but by 1610 he was considered an "elder statesman", introducing bills on ecclesiastical reform and the statutory management of customs duties. He continued to sit in Parliament until his death on 23 February 1620.