3rd Artillery Regiment

3rd Artillery Regiment may refer to:

Italy

 * 3rd Anti-Aircraft Artillery Regiment "Firenze"
 * 3rd Artillery Regiment "Pistoia"
 * 3rd Field Artillery Regiment (Mountain)
 * 3rd Heavy Artillery Regiment "Volturno"
 * 3rd Targeting Support Regiment "Bondone"

United Kingdom

 * 3rd Regiment Royal Horse Artillery
 * III Brigade, Royal Horse Artillery
 * III Brigade, Royal Horse Artillery (T.F.)
 * 3rd (Ulster) Searchlight Regiment, Royal Artillery
 * 3rd Middlesex Artillery Volunteers
 * 3rd West Lancashire Artillery

United States

 * 3rd Air Defense Artillery Regiment
 * 3rd Field Artillery Regiment (United States)
 * 3rd Continental Artillery Regiment
 * 3rd Massachusetts Heavy Artillery Regiment
 * 3rd Pennsylvania Heavy Artillery Regiment
 * 3rd Rhode Island Heavy Artillery Regiment

Other countries

 * 3rd Field Artillery Regiment (Canada)
 * 3rd Medium Regiment, Royal Canadian Artillery
 * 3rd Field Artillery Regiment (Denmark)
 * 3rd Marine Artillery Regiment (France)
 * 3rd Field Regiment, Royal New Zealand Artillery