~ U ~
Items marked in red are ordinarily in weave

 7602 - Uist Green tartan
 1196 - Ulster tartan
   792 - Ulster Red � tartan
   276 - Unidentified tartan
   351 - Unidentified tartan
   463 - Unidentified tartan
     66 - Unidentified tartan
   598 - Unidentified tartan
   622 - Unidentified tartan
 2144 - Unidentified B'gowrie tartan
 2018 - Unidentified Fragment tartan
 2098 - United Distillers tartan
 7336 - United Scots American (Fashion)
 2097 - United Services Planning Assoc
 2126 - United States tartan
   136 - Universal Ancient tartan
 7516 - University of Edinburgh tartan
 1340 - Unnamed No 1 tartan
 1326 - Unnamed No 14 tartan
   805 - Unnamed No 38 tartan
 1257 - Unnamed No 5 tartan
 1317 - Unnamed No 57 tartan
   774 - Urquhart tartan
   806 - Urquhart tartan
 1086 - Urquhart Broad Red tartan
   623 - Urquhart White Line tartan
 2437 - US Air Force Reserve Pipe Band
 6307 - US Army tartan
   549 - US Forces (Thurso) tartan
 2702 - Utah State tartan