| Spezies | Risiko- gruppe | Bemer- kungen | Status |
| Jahnella | |||
| Jahnella thaxteri [Jahnia thaxteri] | 1 | ||
| Janibacter | |||
| Janibacter alkaliphilus | 1 | ||
| Janibacter anophelis | 1 | ||
| Janibacter brevis – synonym: Janibacter terrae | |||
| Janibacter corallicola | 1 | ||
| Janibacter cremeus | 1 | ||
| Janibacter hoylei | 1 | ||
| Janibacter indicus | 1 | neu | |
| Janibacter limosus | 1 | ||
| Janibacter melonis | 1 | ||
| Janibacter terrae | 1 | ||
| Jannaschia | |||
| Jannaschia aquimarina | 1 | ||
| Jannaschia cystaugens | 1 | ||
| Jannaschia donghaensis | 1 | ||
| Jannaschia faecimaris | 1 | ||
| Jannaschia helgolandensis | 1 | ||
| Jannaschia pohangensis | 1 | ||
| Jannaschia rubra | 1 | ||
| Jannaschia seohaensis | 1 | ||
| Jannaschia seosinensis | 1 | ||
| Janthinobacterium | |||
| Janthinobacterium agaricidamnosum | 1 | ||
| Janthinobacterium lividum | 1 | ||
| Jatrophihabitans | |||
| Jatrophihabitans endophyticus | 1 | ||
| Jatrophihabitans fulvus | 1 | neu | |
| Jatrophihabitans huperziae | 1 | neu | |
| Jatrophihabitans soli | 1 | neu | |
| Jejudonia | |||
| Jejudonia soesokkakensis | 1 | ||
| Jejuia | |||
| Jejuia pallidilutea | 1 | ||
| Jeongeupia | |||
| Jeongeupia chitinilytica | 1 | ||
| Jeongeupia naejangsanensis | 1 | ||
| Jeotgalibaca | |||
| Jeotgalibaca dankookensis | 1 | ||
| Jeotgalibacillus | |||
| Jeotgalibacillus alimentarius | 1 | ||
| Jeotgalibacillus alkaliphilus | 1 | neu | |
| Jeotgalibacillus campisalis (Marinibacillus campisalis) | 1 | ||
| Jeotgalibacillus malaysiensis | 1 | neu | |
| Jeotgalibacillus marinus (Marinibacillus marinus, Bacillus marinus, Bacillus globisporus subsp. marinus) | 1 | ||
| Jeotgalibacillus salarius | 1 | ||
| Jeotgalibacillus soli | 1 | ||
| Jeotgalibacillus terrae | 1 | neu | |
| Jeotgalicoccus | |||
| Jeotgalicoccus aerolatus | 1 | ||
| Jeotgalicoccus coquinae | 1 | ||
| Jeotgalicoccus halophilus | 1 | ||
| Jeotgalicoccus halotolerans | 1 | ||
| Jeotgalicoccus huakuii | 1 | ||
| Jeotgalicoccus marinus | 1 | ||
| Jeotgalicoccus nanhaiensis | 1 | ||
| Jeotgalicoccus pinnipedialis | 1 | ||
| Jeotgalicoccus psychrophilus | 1 | ||
| Jeotgalicoccus schoeneichii | 1 | neu | |
| Jhaorihella | |||
| Jhaorihella thermophila | 1 | ||
| Jiangella | |||
| Jiangella alba | 1 | ||
| Jiangella alkaliphila | 1 | ||
| Jiangella gansuensis | 1 | ||
| Jiangella mangrovi | 1 | neu | |
| Jiangella muralis | 1 | ||
| Jiella | |||
| Jiella aquimaris | 1 | neu | |
| Jishengella | |||
| Jishengella endophytica | 1 | ||
| Jiulongibacter | |||
| Jiulongibacter sediminis | 1 | neu | |
| Johnsonella | |||
| Johnsonella ignava | 2 | ||
| Jonesia | |||
| Jonesia denitrificans (Listeria denitrificans) | 2 | t | |
| Jonesia quinghaiensis | 1 | ||
| Jonquetella | |||
| Jonquetella anthropi | 2 | ||
| Joostella | |||
| Joostella marina | 1 |