166 (disambiguation)

166 may refer to:


 * 166 (year)
 * 166 (number)
 * ONE 166, a combat sport event produced by ONE Championship
 * EN 166, a European standard concerning eye protection
 * UFC 166, a mixed martial arts event held by the Ultimate Fighting Championship
 * Ferrari 166, various Ferrari sports cars
 * Alfa Romeo 166, an executive sedan
 * Radical 166, one of the 20 Kangxi radicals (214 radicals in total) composed of 7 strokes meaning "village" or "li"
 * 166 Rhodope, a dark background asteroid from the central region of the asteroid belt