| 38996 | Atwood machines | |
| 34170 | Aubepine | |
| 21320 | Aubergines in provisional preservative solutions, not suitable for immediate consumption | |
| 01239 | Aubergines, fresh or chilled | |
| 85990 | Auction services other than in connection with legal procedures | |
| 73210 | Audio cassettes, rental or leasing of | |
| 84160 | Audio conferencing bridging services | |
| 87151 | Audio equipment, home, repair of | |
| 47331 | Audio frequency measurement amplifiers | |
| 96112 | Audio mixing studios, services of | |
| 96112 | Audio post-production services | |
| 48120 | Audiometers | |
| 83820 | Audio-visual media copying services | |
| 84420 | Audio-visual media, gathering of news for | |
| 84420 | Audio-visual media, investigation of news for | |
| 84420 | Audio-visual media, news agency services provided to | |
| 84420 | Audio-visual media, services rendered to, by independent journalists | |
| 84420 | Audio-visual media, services rendered to, by independent press cameramen | |
| 84420 | Audio-visual media, supplying of news photos to | |
| 84420 | Audio-visual media, supplying of news to | |
| 96130 | Audio-visual production support services | |
| 71533 | Audit confirmation services | |
| 82211 | Auditing services, financial | |
| 83111 | Audits, management, consulting services concerning | |
| 83113 | Audits, personnel, consulting services concerning | |
| 83141 | Audits, systems, consulting services concerning | |
| 44412 | Augering machines, hand- or power-operated, for boring holes in the ground (excl. hand tools of subclass 42922) | |
| 42921 | Augers, hand-operated (excl. interchangeable tool pieces), of base metal | |
| 42922 | Augers, interchangeable, for earth boring | |
| 16310 | Augite, unworked or simply sawn or roughly shaped, whether or not graded, not strung, mounted or set nor converted into articles | |
| 38220 | Augite, worked other than simply sawn or roughly shaped, whether or not graded, not strung, mounted or set nor converted into articles | |
| 34310 | Auramine | |
| 34250 | Auric acid | |
| 34250 | Auric anhydride | |
| 34250 | Auric chloride | |
| 34250 | Auric hydroxide | |
| 34250 | Auric oxide | |
| 34230 | Auripigment, false | |
| 48150 | Auriscopes | |
| 34250 | Aurous chloride | |