Petko Staynov (Bulgarian: Петко Стайнов; December 1, 1896 in Kazanlak – June 26, 1977) was a Bulgarian composer and pianist. He enriched the Bulgarian musical culture and contributed considerably to its development. A composer of great creative talent, of wide musical and general culture, possessing a keen sense for the topical ideas of modern time, he dedicated his entire life and all his abilities to Bulgarian music and musical culture, and to the Bulgarian Academy of Sciences.
At the age of six Staynov injured one of his eyes; as a result, the other eye was also infected. At 11 he lost his sight completely. He graduated from the Institute for the Blind in Sofia (1915), where his talent for music showed for the first time. Later he studied music with Andrei Stoyanov and made his initial attempts at composing. In 1920 he left for Germany for a year of studies at the Private Musical Lyceum in Braunschweig. In 1923 he graduated from the Dresden Musical Conservatory, majoring in composition under Alexander Wolf and in piano under Ernst Munch. Having returned to Kazanluk in 1925, he created his first major work: the Thracian Dances symphonic suite in three movements. He later added an additional movement to the suite, Mechkarsko (The Bear Warder's Dance, 1926).
In 1927 he moved to Sofia and began teaching piano at the Institute for the Blind. Petko Staynov worked mainly in the genres of symphonic and choral music. Being equally talented in both, he generalised some trends in Bulgarian musical creativity and opened new vistas to its development. He adapted the European musical tradition to the Bulgarian way of thinking, to the abilities of both performers and listeners, to the natural process of advancement of the national music. From European music Staynov adopted some expressive devices and forms, the resources of the symphony orchestra, the construction of a well-engineered structure. What characterises him as a markedly Bulgarian musical creative artist is the introduction of a Bulgarian musical style of his own. This style was expressed to its fullest in the completely independent melody (without direct quoting of folk music) and in the harmonic language of his work. The idea of his compositions is clarified through the lyrics of his choral songs and ballads and through the programmatic titles of most of his symphonic works.