| Index for X | 17 ord, 32 henvisninger. |
| x | Benedictus X Gregory X = Gregor X Johannes X Konstantinos X Leo X |
| xavier, francis | João de Castro |
| xavier, franz | Bemærkninger til Jesuitterne |
| xenopsylla cheopis | The Plague |
| xi | Benedict XI Gregory XI = Gregor XI Johannes XI Konstantinos XI Dragases |
| xii | Benedict XII Gregor XII Johannes XII |
| xiii | Benedict XIII Johannes XIII |
| xiv | Benedictus XIV Johannes XIV |
| xix | John XIX |
| xv | Johannes XV |
| xvi | Johannes XVI |
| xvii | Johannes XVII |
| xviii | Johannes XVIII |
| xxi | John XXI = Johannes XXI |
| xxii | John XXII = Johannes XXII |
| xxiii | Johannes XXIII |
| xylander, johannes | Laurentz Benedicht |