| |
| Tartan Name | Oklahoma | | | | Category | District
| | | | Designer | Wittering/Murray | STA Ref | 2429 | | Date Recorded | Not Specified | STWR Ref | 2429 |
| | |
| |
| Tartan Name | Oklahoma State University | | | | Category | Corporate
| | | | Designer | Michalko, Stephanie | STA Ref | 7851 | | Date Recorded | Not Specified | STWR Ref | none |
| |  |
| |
| Tartan Name | Olann Aon Takihyo | | | | Category | Fashion
| Reference | 11898 | | Designer | Urquhart, Blair | | | | Date Recorded | 22/08/2017 | | |
| | |
| |
| Tartan Name | Olann DhĂ Takihyo | | | | Category | Fashion
| Reference | 11899 | | Designer | Urquhart, Blair | | | | Date Recorded | 22/08/2017 | | |
| | |
| |
| |  |
| |
| Tartan Name | Old Brigade | | | | Category | Corporate
| Reference | 10718 | | Designer | Rogers, James | | | | Date Recorded | 12/10/2012 | | |
| |  |
| |
| Tartan Name | Old Capital | | | | Category | Fashion
| Reference | 12807 | | Designer | Ishii, Keiko | | | | Date Recorded | 31/03/2020 | | |
| | |
| |
| Tartan Name | Old England House Check | | | | Category | Fashion
| Reference | 11148 | | Designer | Joshua Ellis and Co Ltd | | | | Date Recorded | 23/10/2014 | | |
| |  |
| |
| Tartan Name | Old Glory (1824) | | | | Category | Commemorative
| Reference | 11557 | | Designer | Sim, Steven Patrick | | | | Date Recorded | 14/06/2016 | | |
| | |
| |
| Tartan Name | Oliphant | | | | Category | Clan/Family | | | | Designer | Sobieski Stewarts, The | STA Ref | 242 | | Date Recorded | Not Specified | STWR Ref | 242 |
| | |
| |
| Tartan Name | Oliphant Dress | | | | Category | Clan/Family | Reference | 10227 | | Designer | Oliphant/Urquhart | | | | Date Recorded | 16/06/2010 | | |
| |  |
| |
| Tartan Name | Oliver Dress (Dance) | | | | Category | Fashion
| | | | Designer | Dalgliesh, D C | STA Ref | 5526 | | Date Recorded | Not Specified | STWR Ref | none |
| | |
| |
| Tartan Name | Oliver Dress (Red) | | | | Category | Clan/Family | | | | Designer | Cargill, John | STA Ref | 1606 | | Date Recorded | Not Specified | STWR Ref | 1606 |
| | |
| |
| Tartan Name | Oliver Dress Pink | | | | Category | Clan/Family | | | | Designer | Cargill, John | STA Ref | 1259 | | Date Recorded | Not Specified | STWR Ref | 1259 |
| | |
| |
| Tartan Name | Oliver Hunting | | | | Category | Clan/Family | | | | Designer | Cargill, John | STA Ref | 126 | | Date Recorded | Not Specified | STWR Ref | 126 |
| | |
| |
| Tartan Name | Olympic | | | | Category | Corporate
| | | | Designer | Not Specified | STA Ref | 1923 | | Date Recorded | Not Specified | STWR Ref | 1923 |
| | |
| |
| Tartan Name | Olympicana | | | | Category | Commemorative
| | | | Designer | West Coast Woolen Mill | STA Ref | 5525 | | Date Recorded | Not Specified | STWR Ref | none |
| | |
| |
| | |
| |
| | |
| |
| | |