| Abbreviation | Chemical Name |
| ABA | Acrylonitrile-Butadiene-Acrylate |
| ABS | Acrylonitrile-Butadiene-Styrene |
| ABS / PC | Acrylonitrile-Butadiene-Styrene / Polycarbonate |
| ABS / PVC | Acrylonitrile-Butadiene-Styrene / Polyvinylchloride |
| ABS + PUR | Acrylonitrile-Butadiene-Styrene + Polyurethane |
| AC | Acrylic Copolymer |
| ACM | Polyacrylate Acrylic Elastomer |
| ACS | Acrylonitrile-Chlorinated Ethylene-Styrene |
| ADC | Allyl Diglycol Carbonate (CR-39) |
| AEM | Acrylate Ethylene Elastomer |
| AES | Acrylonitrile-Ethylene-Propylene-Styrene |
| AHEW | Amine Hydrogen Equivalent Weight |
| AIBN | Azobisdisobutyronitrile (Free Radical Initiator) |
| AMA | Acrylate Maleic Anhydride Terpolymer |
| AMMA | Acrylonitrile-Methyl Methacrylate |
| AN | Acrylonitrile |
| AO | Antioxidant |
| APET | Amorphous Polyethylene Terephthalate |
| APO | Amorphous Polyolefin |
| APP | Atactic Polypropylene |
| AS | Acrylic-Styrene Copolymer |
| ASA | Acrylic-Styrene-Acrylonitrile Copolymer |
| ASA+PC | Acrylic-Styrene-Acrylonitrile + Polycarbonate |
| ATH | Aluminum Trihydrate |
| ATRP | Atom Transfer Radical Polymerization |
| AU | Polyester Urethane Elastomer |