| Honorific Prefix: | Saint |
| Theodoric | |
| Honorific Suffix: | of Mont d'Or |
| Birth Place: | France |
| Death Date: | 533 |
| Death Place: | Reims, France |
| Canonized Date: | Pre-congregation |
| Feast Day: | 1 July |
Saint Theodoric of Mont d'Hor (or Theudric, Thierri, Thierry; died 533) was a disciple of Saint Remigius who became abbot of Saint-Thierry Abbey, near Reims, France.His feast day is 1 July.
The monks of St Augustine's Abbey, Ramsgate wrote in their Book of Saints (1921),
The hagiographer Alban Butler (1710–1773) wrote in his Lives of the Fathers, Martyrs, and Other Principal Saints under July 1,
Sabine Baring-Gould (1834–1924) in his Lives Of The Saints wrote under July 1,