Nathaniel Lindley, Baron Lindley SL PC FRS (29 November 1828 – 9 December 1921) was an English judge.
He was the second son of the botanist John Lindley, born at Acton Green, London. He was educated at University College School, and studied for a time at University College London.
He was called to the bar at the Middle Temple in 1850, and began practice in the Court of Chancery. In 1855 he published An Introduction to the Study of Jurisprudence, consisting of a translation of the general part of Thibaut's System des Pandekten Rechts, with copious notes. In 1860 he published in two volumes his Treatise on the Law of Partnership, including its Application to and other Companies, and in 1862 a supplement including the Companies Act 1862. This work has since been developed into two textbooks well known to lawyers as Lindley on Companies and Lindley on Partnership.
He took silk in February 1872. In 1874 he was elected a bencher of the Middle Temple, of which he was treasurer in 1894.
In 1875, he was appointed to be a Serjeant-at-law and a Justice of the Court of Common Pleas, the appointment of a chancery barrister to a common-law court being justified by the fusion of common law and equity then shortly to be brought about, in theory at all events, by the Judicature Acts.
In 1875, he was knighted. In 1880 he became a justice of the Queen's Bench and in 1881 he was raised to be a Lord Justice of the Court of Appeal and was sworn of the Privy Council.