| A regnal year is a year of the reign of a sovereign, from the Latin regnum meaning kingdom, rule. |
| It was called a regnum in contemporary sources, though this does not necessarily mean that it was a kingdom or subkingdom. |
| It was the eastern half of the old Merovingian regnum Austrasiorum. |
| Regnum Christi was founded in Mexico by Fr Marcial Maciel, the founder of the Congregation of the Legionaries of Christ, sharing its spirituality focused on a personal love for Jesus Christ. |
