Tachyon (disambiguation)

A tachyon is a hypothetical faster-than-light particle.

Tachyon or tachyonic may also refer to:
 * Tachyonic field or tachyon, a field excitation with imaginary mass
 * Tachyon (software), ray-tracing software
 * Tachyon: The Fringe, a 2000 computer game
 * Tachyon Publications, a US book publisher