Witnesses to the Historia regum Britanniae by Geoffrey of Monmouth
See also Lost Manuscripts, which are not included in the following list.
| Record No. | Country | City | Repository | Shelfmark | View Details |
|---|---|---|---|---|---|
| 11 | Belgium | Brussels | Bibliothèque de la Société des Bollandistes | 625 | View Details |
| 23 | Denmark | Copenhagen | Det Kongelige Bibliotek | Acc. 2011/5 | View Details |
| 24 | France | Auxerre | Bibliothèque municipale | 91 | View Details |
| 31 | France | Douai | Bibliothèque Marceline Desbordes-Valmore | 880 | View Details |
| 32 | France | Douai | Bibliothèque Marceline Desbordes-Valmore | 882 | View Details |
| 39 | France | Paris | Bibliothèque de l'Arsenal | 982 | View Details |
| 45 | France | Paris | Bibliothèque nationale de France | Latin 4126 | View Details |
| 63 | France | Paris | Bibliothèque nationale de France | Latin 18271 | View Details |
| 80 | Germany | Berlin | Staatsbibliothek - Preußischer Kulturbesitz | lat. fol. 147 | View Details |
| 96 | Germany | Leipzig | Universitätsbibliothek | Cod. Haen. 3518 | View Details |
| 115 | Ireland | Dublin | Trinity College | IE TCD 514 | View Details |
| 116 | Ireland | Dublin | Trinity College | IE TCD 515 | View Details |
| 117 | Ireland | Dublin | Trinity College | IE TCD 11500 | View Details |
| 192 | Switzerland | Bern | Burgerbibliothek | Cod. 392 | View Details |
| 200 | United Kingdom | Aberystwyth | National Library of Wales | 13210D | View Details |
| 203 | United Kingdom | Cambridge | Corpus Christi College, Parker Library | 414 | View Details |
| 205 | United Kingdom | Cambridge | St John's College | G.16 | View Details |
| 206 | United Kingdom | Cambridge | Sidney Sussex College | 75 | View Details |
| 208 | United Kingdom | Cambridge | University Library | Dd.10.31 | View Details |
| 209 | United Kingdom | Cambridge | University Library | Mm.5.29 | View Details |
| 210 | United Kingdom | Cardiff | Central Library | 2.611 | View Details |
| 211 | United Kingdom | Edinburgh | National Library of Scotland | Adv. 18.4.5 | View Details |
| 213 | United Kingdom | Exeter | Cathedral Library | 3514 | View Details |
| 215 | United Kingdom | Glasgow | University of Glasgow Library | Hunter 332 | View Details |
| 216 | United Kingdom | Lincoln | Cathedral Library | 98 | View Details |
| 236 | United Kingdom | London | British Library | Royal 13 A V | View Details |
| 241 | United Kingdom | London | British Library | Stowe 56 | View Details |
| 242 | United Kingdom | London | College of Arms | Arundel 1 | View Details |
| 244 | United Kingdom | London | Lambeth Palace | 401 | View Details |
| 248 | United Kingdom | Oxford | Bodleian Library | Bodley 977 | View Details |
| 261 | United Kingdom | Winchester | Cathedral Library | IX | View Details |
| 265 | United States of America | New Haven, CT | Yale University, Beinecke Rare Book & Manuscript Library | Beinecke 598 | View Details |
| 268 | United States of America | Notre Dame, IN | University of Notre Dame, Hesburgh Library | Lat. d. 3 | View Details |