Nigricauda, a Latin word meaning black-tailed, may refer to:
B. nigricauda Brycinus nigricauda, Thys van den Audenaerde, 1974, a ray-finned fish species in the genus Brycinus D. nigricauda Dasymutilla nigricauda, a wasp species in the genus Dasymutilla E. nigricauda Enneapterygius nigricauda, Fricke, 1997, the blacktail triplefin, a fish species in the genus Enneapterygius N. nigricauda Nephrotoma nigricauda, Alexander, 1925, a species in the genus ''Nephrotoma R. nigricauda Rineloricaria nigricauda, a freshwater tropical catfish species in the genus Rineloricaria
Subspecies Leucauge decorata nigricauda, Schenkel, 1944, a subspecies in the spider species Leucauge decorata and the genus Leucauge found in Timor a race of the white-rumped shama, a small passerine bird
See also Nigricaudus