Reign is an English word name that means "rule" or "sovereignty", the period a monarch holds the throne; it comes from the Latin regnum. It belongs to the recent American taste for regal word names such as Royal and Legend, and it sounds like the gentler nature name Rain. Reign entered the US top 1000 for girls in 2016, rose quickly to number 349 in 2021 and ranks number 452 in 2025.