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| Tartan Name | Atlantic Police Academy | | | | Category | Corporate
| | | | Designer | Brown-Martel, Elisa | STA Ref | none | | Date Recorded | Not Specified | STWR Ref | 3132 |
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| Tartan Name | Atlantic Puffin | | | | Category | Fashion
| Reference | 11861 | | Designer | Martin, Carol A L | | | | Date Recorded | 13/07/2017 | | |
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| Tartan Name | Atlantic Strong | | | | Category | Corporate
| Reference | 13628 | | Designer | Public Safety Canada | | | | Date Recorded | 27/09/2022 | | |
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| Tartan Name | Atlas Cranes UK Ltd | | | | Category | Corporate
| Reference | 12011 | | Designer | Elliot, Robin | | | | Date Recorded | 18/12/2017 | | |
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| Tartan Name | Atlin | | | | Category | Fashion
| | | | Designer | West Coast Woolen Mill | STA Ref | 3624 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | AttackIQ | | | | Category | Corporate
| Reference | 12547 | | Designer | Kennedy, Chris | | | | Date Recorded | 09/07/2019 | | |
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| Tartan Name | Atwal (2018) | | | | Category | Name
| Reference | 12109 | | Designer | Halley, Brian, Slanj Kilts | | | | Date Recorded | 10/04/2018 | | |
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| Tartan Name | Aubigny | | | | Category | District
| | | | Designer | House of Edgar - Macnaughton Holdings Ltd. | STA Ref | 2159 | | Date Recorded | Not Specified | STWR Ref | 2159 |
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| Tartan Name | Auburn University (Alabama) | | | | Category | Corporate
| | | | Designer | Smith Jnr, Dr Philip D | STA Ref | 5881 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Auchairne | | | | Category | Corporate
| | | | Designer | McDonnell, Ian J | STA Ref | 2214 | | Date Recorded | Not Specified | STWR Ref | 2214 |
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| Tartan Name | Auchairne Grey | | | | Category | Corporate
| | | | Designer | McDonnell, Ian J. | STA Ref | 2479 | | Date Recorded | Not Specified | STWR Ref | 2479 |
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| Tartan Name | Auchinachie | | | | Category | Name
| Reference | 10014 | | Designer | Hek, Ronnie | | | | Date Recorded | 08/04/2009 | | |
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| Tartan Name | Auchincloss (Personal) | | | | Category | Name
| | | | Designer | Kinloch Anderson Ltd | STA Ref | 6859 | | Date Recorded | Not Specified | STWR Ref | 3025 |
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| Tartan Name | Auchmaliddie Samkoma | | | | Category | Commemorative
| Reference | 10348 | | Designer | Smith, Alan Howard | | | | Date Recorded | 25/01/2011 | | |
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| Tartan Name | Auchterlonie (Personal) | | | | Category | Name
| | | | Designer | Dalgety, Jack | STA Ref | 3801 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Auckland | | | | Category | District
| | | | Designer | Urquhart/McInnes | STA Ref | 3043 | | Date Recorded | Not Specified | STWR Ref | none |
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| Tartan Name | Audley, The | | | | Category | Corporate
| Reference | 13779 | | Designer | Campbell, Araminta | | | | Date Recorded | 31/01/2023 | | |
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| Tartan Name | Audley, The - Dress | | | | Category | Corporate
| Reference | 13781 | | Designer | Campbell, Araminta | | | | Date Recorded | 31/01/2023 | | |
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| Tartan Name | Audley, The - Hunting | | | | Category | Corporate
| Reference | 13780 | | Designer | Campbell, Araminta | | | | Date Recorded | 31/01/2023 | | |
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