Variant of Reagan, from Irish 'Ríagán' meaning little king or impulsive one.
Ragan is a sleek, modern spelling of the ancient Gaelic name Ríagán, meaning "little king" or "descendant of the impulsive one" — rooted in the Old Irish "ríg" (king) combined with a diminutive suffix. It traveled into English primarily as a surname, carried to Britain by Irish settlers over centuries, before the surname-to-forename trend of the twentieth century brought it into the nursery.
As a given name, Ragan gained gentle traction in the American South and Midwest during the 1970s and 1980s, partly riding the wave of Reagan-era cultural prominence — though the spelling Ragan sets it distinctly apart, giving it a quieter, more literary feel. Shakespeare fans will recognize the sound in King Lear's villainous daughter Regan, though Ragan sidesteps those dark connotations with its altered vowel. Today Ragan occupies an interesting middle ground: old enough to carry genuine heritage, uncommon enough to feel fresh.
It works equally well for boys and girls, making it a favorite among parents drawn to gender-neutral names with Celtic roots. Its crisp two-syllable rhythm and strong ending give it natural staying power as a name that sounds confident without straining for attention.