Reagan, the Anglicized form of the Irish surname meaning "descendant of Ríagán," can be used for both boys and girls. The related name may mean "impulsive," or "like a king." Most people may still associate this name with Ronald Reagan, the 40th U.S. president, and therefore consider it boys-only. Regan is another common Western spelling. Although the more traditional pronunciation is REE-gan, most modern Americans say RAY-gen.
This Gaelic name was first used for girls thanks to William Shakespeare, for his character in "King Lear," who was an untrustworthy princess. However, the name didn't become widely used for girls until the late 20th century. The name could have been propelled by a few different things, one of which was Linda Blair's character Regan McNeil in the 1971 film Exorcist. Reagan Gomez-Preston is an American actress.
In 2012 Reagan ranked at #97 on the U.S. top 1000, taking only a decade to jump up more than 800 spots on the charts. It was #893 for boys. The most obvious nickname is Ray (Rae).