Name  | active from | active to | |
| Jelinek, Jiri | 1946 | 1984 | |
| Jelinek, Miki | | | |
| Jelinek, Stanislav | | | |
| Jelinkova, Jana | | | |
| Jen tak | 1986 | 2009 | |
| Jen zadnou paniku | 1990 | 1991 |  |
| Jergus Oravec Trio | 2012 | | |
| Jerusalem | 1988 | | |
| Jerabek, Ivan | | | |
| Jerabek, Jan | | | |
| Jesenska, Jitka | | | |
| Jeste jsme se nedohodli | 1980 | | |
| Jezinky | 1970 | | |
| Jezil, Milos | | | |
| Jihoceska filharmonie | | | |
| Jina rychlost casu | 1992 | 1993 | |
| Jindrak, Jindrich | | | |
| Jiran, Jan | 1977 | | |
| Jirous, Martin (Magor) | | | |
| Jiri Stivin & Co Jazz System | 1971 | | |
| Jisova, Pavlina | 1980 | | |
| Jitka Suranska trio | 2014 | 2019 | |
| Jizerska protez | 1972 | | |
| Jizni pol | 1983 | 1991 | |
| Jock the Lock | 2009 | | |
| JOCR | 1960 | | |
| Joe Carnation Band | | | |
| John Dovanni | 1990 | 1995 | |
| John McLaughlin Duo | | | |
| Johnova, Marketa | 1970 | 2000 | |
