A. niger
- Aaptos niger
- Abacetus niger
- Acanthus niger
- Achalinus niger
- Acromyrmex niger
- Afroeurydemus niger
- Agelastes niger
- Allocyttus niger
- Allogaster niger
- Amblytelus niger
- Amphicrossus niger
- Andricus
- Andropogon niger
- Aneides niger
- Aparallactus niger
- Aspergillus niger
- Aspidophorus niger
- Astronesthes niger
- Austropyrgus niger
- Niger (disambiguation)