Uuno (Kalervo) Klami (20 September 1900, Virolahti – 29 May 1961, Virolahti) was a Finnish composer of the modern period. He is widely recognized as one of the most significant Finnish composers to emerge from the generation that followed Jean Sibelius.

He was born in Virolahti. Many of his works are related to the Kalevala. He was influenced by French and Spanish music, and especially by Maurice Ravel, for whom he had a particular esteem.

The core of Klami's oeuvre consists of an assortment of works related to the Finnish national epic, the Kalevala, among the most notable being: the five-movement Kalevala sarja (Kalevala Suite; 1933, r. 1943), inspired by Stravinsky's The Rite of Spring; the symphonic poem, Lemminkäisen seikkailut saaressa (Lemminkäinen’s Island Adventures; 1934); and, the unfinished ballet, Pyörteitä (Whirls), which survives as two suites. As central to Klami's legacy is the six-movement orchestral suite, Merikuvia (Sea Pictures; 1932); the Karelian Rhapsody (1927); and, Psalmus (1936), an oratorio for soloists, mixed, chorus and orchestra. He also wrote two numbered symphonies, in 1938 and 1945, respectively, as well as two piano concerti (1925, 1950), a Violin Concerto (1943), and the Cheremissian Fantasy for cello and orchestra (1931).

He participated in six armed conflicts, including two wars in Karelia, the Finnish Civil War, the Estonian War of Independence, the Winter War of 1939–40 and the Continuation War of 1941–44.