Onyx is a banded variety of chalcedony (quartz). Onyx can also be used to mean the color black, especially "jet" black. Onyx may also refer to: Locations:
- Onyx, California, a census-designated place located in Kern County, California
- Onyx Cave, a common name for caves in the United States
- Onyx River, a meltwater stream in the Antarctic
- Onyx (planet), a fictitious planet in the Power Rangers Universe
- The titular fictitious planet in the novel Halo: Ghosts of Onyx
People:
- Kyle McNeely, pro wrestler known by the ring name Oynx
- Onyx (comics), a fictional comic book character in the DC Universe, mainly associated with the Batman titles
- Onyx Von Trollenberg, a character from the animated series Trollz.
- Onyx Primal, a Predacon Assassin from the Transformers Beast Wars cartoon series. This figure was available in exclusively at Botcon 1996.
Organizations:
- Onyx Software Corporation, a customer, process and performance management software company
- Onyx (group), a Queens-based rap group
- Onyx Grand Prix, a short-lived Formula One team, 1989-1990
- Onyx Environnement, the waste management division of Veolia Environnement
- Onyx Pharmaceuticals, Inc., a pharmaceutical research company, specializing in cancer treatments.
- Onyx Sports Cars
Technology:
- SGI Onyx, a line of symmetric multiprocessing computers from Silicon Graphics that are frequently used for high-end graphics, modelling, and simulation work
- Synaptics Onyx, a concept cellphone designed to display Synaptics ClearPad technology.
- Onyx (satellite), a code name often associated with newer variants of the Lacrosse satellite, a series of reconnaissance satellite owned by the United States National Reconnaissance Office
- Onyx (interception system), a Swiss intelligence gathering system
- Onyx programming language, a BSD-licensed embeddable stack-based programming language
- Onyx TV, a German based music channel, replaced by ABSAT's terra nova.
- Onyx-15, an adenovirus being researched for cancer treatment
Vessels:
- USS Onyx (PYc-5) a United States Navy patrol vessel of the mid-20th century
- HMS Onyx (S21), an Oberon-class submarine of the British Royal Navy
