155 (disambiguation)

155 may refer to:


 * 155 (year)
 * 155 (number)
 * RCH 155, a wheeled self-propelled howitzer
 * Alfa Romeo 155, a compact executive sedan
 * UFC 155, a mixed martial arts event held by the Ultimate Fighting Championship
 * SMArt 155, a German 155 mm artillery round designed for a long-range, indirect fire top-attack role against armoured vehicles