LaDonna Smith has been played on NTS shows including Geologist Presents: The O'Brien System, with Earthen Morphogenesis first played on 26 April 2022.

LaDonna Smith (born 1951) is an American avant-garde musician from Birmingham, Alabama, United States. She is a violinist, violist, and pianist. Since 1974 she has been performing free improvisational music with musicians such as Davey Williams, Jill Burton, Gunther Christmann, Anne Lebaron, Derek Bailey, Eugene Chadbourne, Misha Feigin, Michael Evans, David Sait, Jack Wright, John Russell, Sergey Letov, Toshi Makihara, Andrew Dewar and many other of the world's major improvisers.

As a performer, she has toured the United States, Canada, Europe, including Russia and Siberia, China and Japan. Her music is documented on dozens of CD and LP recordings including the obscure Say Daybew Records of Fred Lane and the Debonaires. An active organizer, she produced numerous concerts in Alabama and the Southeast, including the Birmingham Improv Festival. She is an educator and serves on the Board of Directors of I.S.I.M., International Society of Improvised Music.

In 1976, LaDonna Smith co-founded TransMuseq Records in collaboration with Davey Williams. In 1980, the improvisor magazine began as an extension of I.N., the Improvisor's Networka grass-roots organization that attempted to connect improvising musicians across the United States, founded at that time in New York City. LaDonna is currently editor-in-chief and publisher of the improvisor, the international journal of free improvisation, which now exists on the web at www.the-improvisor.com