The Bachianas Brasileiras are a series of nine suites by the Brazilian composer Heitor Villa-Lobos, written for various combinations of instruments and voices between 1930 and 1945. They represent a fusion of Brazilian folk and popular music on the one hand and the style of Johann Sebastian Bach on the other, as an attempt to freely adapt a number of Baroque harmonic and contrapuntal procedures to Brazilian music. Most of the movements in each suite have two titles: one "Bachian", the other Brazilian.

Heitor Villa-Lobos was a Brazilian composer, conductor, cellist, and classical guitarist described as "the single most significant creative figure in 20th-century Brazilian art music". Villa-Lobos has become the best-known South American composer of all time. A prolific composer, he wrote numerous orchestral, chamber, instrumental and vocal works, totaling over 2,000 works by his death in 1959. His music was influenced by both Brazilian folk music and stylistic elements from the European classical tradition, as exemplified by his Bachianas Brasileiras and his Chôros. His Etudes for classical guitar (1929) were dedicated to Andrés Segovia, while his 5 Preludes (1940) were dedicated to his spouse Arminda Neves d'Almeida, a.k.a. "Mindinha". Both are important works in the classical guitar repertory.