Liu Wenjin (May 1937 – 27 June 2013) was a renowned Chinese composer celebrated for his contributions to classical Chinese music. Born in Tangshan, Hebei Province, China, he was recognized as one of China's most distinguished composer-conductors. Liu was particularly famous for his erhu piece "Sanmenxia Changxiangqu" ("Sanmen Gorge Rhapsody"), composed in 1981. His body of work extended across various musical forms, including instrumental, vocal, choral, and song-and-dance music, and he scored for over a dozen television drama series.

Liu's early academic excellence was evident as he received the outstanding student award during his studies. He graduated from the Central Conservatory of Music in 1961 and composed his first two erhu works, "Ballad of North Henan Province" and "The Sanmen Gorge Capriccio," which skillfully combined the erhu and piano. His "Ballad of North Henan Province" was recognized as a 20th-century classic of Chinese music in 1993. Liu's erhu concerto "The Great Wall Capriccio," debuted at the Shanghai Spring concert in May 1982, was hailed as a milestone in contemporary erhu composition.

Throughout his career, Liu Wenjin was involved in international cultural exchanges, visiting numerous countries to conduct interviews, give lectures, and serve as a guest conductor. He was honored as an artist of extraordinary contribution by the Ministry of Culture and received special allowances from the government. Liu also served as the dean and art supervisor of the Central National Music Orchestra and later as an art instructor at the China Theater of Sing and Dance. In 2001, he was engaged as a professor at the College of National Music, Korea Central University. Liu Wenjin passed away in Beijing on 27 June 2013.