Jméno  | aktivní od | aktivní do | |
| Ježil, Miloš | | | |
| Jihočeská filharmonie | | | |
| Jiná rychlost času | 1992 | 1993 |  |
| Jindrák, Jindřich | | | |
| Jiráň, Jan | 1977 | | |
| Jirous, Martin (Magor) | | | |
| Jiří Stivín & Co Jazz System | 1971 | | |
| Jíšová, Pavlína | 1980 | | |
| Jitka Šuranská trio | 2014 | 2019 | |
| Jizerská protěž | 1972 | | |
| Jižní pól | 1983 | 1991 | |
| Jock the Lock | 2009 | | |
| JOČR | 1960 | | |
| Joe Carnation Band | | | |
| John Dovanni | 1990 | 1995 | |
| John McLaughlin Duo | | | |
| Johnová, Markéta | 1970 | 2000 | |
| Jolly Joker and The Plastic Beatles of the Univers | 1991 | | |
| Jonáš, Gabriel | | | |
| Jonika Quintet | | | |
| Jordák, František | | | |
| Joy | | | |
| Juanita Juarez | 2001 | | |
| Jugend | | | |
| Jukkis Uotila Band | | | |
| Julia | | | |
| Julo Kazimír & Olo Lachký | 1979 | | |
| Junas, Daniel | 1980 | | |
| Junas, Dano | 1978 | | |
| Junior | 1970 | 1976 | |
