Meaning and name origin
Regin \r(e)-gin\ as a boy's name is of Old Norse and Latin origin, and the meaning of Regin is "ruler's advisor". Regin is a variant of Reginn (Old Norse); mythology: Reginn was the son of Hriedmar and a skilled blacksmith. Also a variant of Reginald (Latin): from Reginaldus, influenced by Latin Regina meaning "queen".
Regin is not a popular first name for males and an equally uncommon surname or last name for all people (Source: 2000 U.S. Population Census).
Displayed below is a comparison of the popularity of the boy name Regin and its source forms. The only popular variation form ranked in the Top 1000/100 is Reginald (#805). (Source: 2014 Birth Name Statistics).