Martin Kratochvíl (born 22 May 1946, in Prague) is a Czech jazz keyboardist and businessman. In 1964, he cofounded the ensemble Jazz Q with flautist Jiří Stivín. The group gained recognition for the 1970 fusion album Coniunctio, recorded with the band Blue Effect. During the 1970s, the lineup included guitarist Luboš Andršt and bassist Vladimír Padrůněk, releasing albums such as Pozorovatelna (1973), Elegie (1976), Zvěsti (1978), and Hodokvas (1979). Kratochvíl began a prolific collaboration with American guitarist Tony Ackerman in the 1980s, producing albums including Stará Známost (1987) and Spolu (1990). Following the collapse of the communist regime in 1989, he founded the record label Bonton Music and established Studio Budíkov. His later recording career featured the solo album Piano Solo (2012) and the soundtrack Temné Slunce (2014). He also collaborated with Miroslav Vitouš on the 2014 release No Jazz.