AS3 or AS-3 may refer to:
ActionScript 3.0, ECMAScript AS3 (networking), Applicability Statement 3, a specification standard by which applications communicate for Electronic Data Interchange AS-3 Kangaroo, NATO reporting name for Russian Raduga Kh-20 cruise missile. RuPaul's Drag Race All Stars 3, the third season of television series RuPaul's Drag Race: All Stars. Smith & Wesson AS, a 12 gauge select fire shotgun. , the arsenide anion in chemistry