Frederick Niecks (3 February 1845 – 24 June 1924) was a German musical scholar and author who resided in Scotland for most of his life. He is best remembered for his biographies of Frédéric Chopin and Robert Schumann.
Friedrich Maternus Niecks was born in Düsseldorf, son of a conductor and teacher; his grandfather was a professional musician. He studied music under his father; he later studied violin under Leopold Auer and others, and studied piano and composition under Julius Tausch. At age 13 he made his debut playing Charles Auguste de Bériot's Violin Concerto No. 2, then joined the Musikverein orchestra, with whom he remained until age 21.
In 1868 he expressed a desire to move to Great Britain, and Alexander Mackenzie invited him to settle in Scotland, where he became viola player in Mackenzie's string quartet in Edinburgh and an organist and teacher in Dumfries. In 1879 he became a regular contributor to The Musical Times.
In 1884 he published a Concise Dictionary of Musical Terms, in two editions. In 1888 he published his magnum opus, Frédéric Chopin as Man and Musician, with a German edition coming out in 1889. This was the first comprehensive biography of Chopin.
In 1891 he was appointed Reid Professor of Music at the University of Edinburgh, which post he held until 1914. His activities there included leading a string quartet and presenting an annual series of historical concerts, in addition to his lecturing and teaching duties. His published musical papers included The Flat, the Sharp and the Natural; The Teaching of Musical History; A History of Programme Music from the 16th Century to the Present Time; and The Nature and Capacity of Modern Music.