Hasil Adkins /ˈhæsəl/ (April 29, 1937 – April 26, 2005) was an American singer-songwriter and multi-instrumentalist. His genres include rock and roll, country, blues and more commonly rockabilly, and because of his unusual playing and singing style, he is often cited as an example of outsider music. He generally performed as a one-man band, playing guitar and drums at the same time.

Adkins grew up in poverty in the midst of the Depression, and his spirited, unusual lifestyle is reflected in his music. His songs, which he began recording and distributing locally in the mid-1950s, explored an affinity for sexual intercourse, and decapitation, and were obscure outside of West Virginia until the 1980s. The newfound popularity secured him a cult following, spawned the Norton Records label, and helped usher in the genre known as psychobilly.