The Neisseriaceae family contains the genus:
- Neisseria
- Kingella
- Eikenella
- Alysiella
- Simonsiella
- Microvirgula
- Laribacter
- Vogesella
- Vitreoscilla
- Chromobacterium
- Aquasprillum
- Prolinoborus
- Formivibrio
- Iodobacter
Neisseria gonnorhoeae and N. meningitidis are genetically closely related to human pathogens. There are 17 species in the genus Neisseria isolated from humans, often found in the nose and throat.