Crimson

Crimson may refer to the following:


 * CRIMSON - A codeword classification protocol used by the UNSC.
 * Fireteam Crimson - A SPARTAN-IV fireteam serving aboard the.
 * Crimson Map Pack - A map pack for Halo 4.
 * Crimson Map Pack Trailer - A trailer for the Crimson Map Pack.
 * Dedicated to Crimson - An achievement for Halo 4.