There are multiple artists with this name:
1) Nomad is a raw punk act from New York City, USA.
They are influenced from ultradistorted Japanese hardcore. Link
Comprised of Perdition and Cervix folks. The band sticks to the essential elements of the noise punk formula and really do nothing to hide their worship of raw crust classics such as Confuse and Disclose and that's part of their very charm. Ultradistorted punk insanity.
2) Nomad is a house music duo from England, UK. Read more on Last.fm