Regi

Regi is a rare masculine name, a short form of Reginald — the Old English and Old Norse name meaning powerful ruler or counsel-power, from the Germanic elements regin (counsel) and wald (rule). Reginald has been in use since the Norman Conquest of England.

Regi is very uncommon as a formal given name. It carries the casual, informal charm of nickname names — an approachable diminutive that retains the kingly authority of Reginald in a much lighter, friendlier package.