Nicholas Lechmere, 1st Baron Lechmere (5 August 1675 – 18 June 1727) was an English lawyer and Whig politician who sat in the House of Commons from 1708 until 1721 when he was raised to the peerage as Baron Lechmere. He served as Attorney-General and Chancellor of the Duchy of Lancaster.
Lechmere was the second son of Edmund Lechmere of Hanley Castle, Worcestershire, and the younger brother of Anthony Lechmere, MP. He was admitted at Middle Temple in 1693 and called to the bar on 25 October 1698. In 1708, he became King's counsel. He made a profitable career as a lawyer, where he followed the profession of his grandfather Sir Nicholas Lechmere.
Lechmere was elected in a contest as Member of Parliament for Appleby at the 1708 general election. He transferred to Cockermouth at the 1710 general election and was returned MP in contests then and in 1713. He was one of the authors who drafted legislation concerning Scotland in January 1710. He opposed the Tory ministry's peace policy after 1710 and supported Dissenters' rights. During Queen Anne's reign he was known as a spokesman of the Whigs. In 1714 Lechmere was appointed Solicitor-General and made a Reader of his Inn. In 1715 he became Treasurer of the Inn.
Lechmere was returned unopposed as MP for Cockermouth at the 1715 general election. He replaced his brother as MP for Tewkesbury at a by-election on 12 June 1717. In 1718, he was appointed Attorney-General and also became a Privy Counsellor and Chancellor of the Duchy of Lancaster. On 4 September 1721, having ceased to be attorney-general, he was raised to the peerage as Baron Lechmere of Evesham in the County of Worcester and vacated his seat in the House of Commons.
Lechmere died from a sudden attack of apoplexy, while seated at table, at Campden House, Kensington, on 18 June 1727, and was buried at Hanley Castle, where there is a tablet inscribed to his memory. 
This article incorporates text from a publication now in the public domain: Walford, Edward (1892). "Lechmere, Nicholas (1675-1727)". In Lee, Sidney (ed.). Dictionary of National Biography. 32. London: Smith, Elder & Co.