US Popularity Rank: 3436

Origin: Irish

Meaning: Descendant of Raghailleach

Reilly is a gender-neutral name of Irish origin. A traditional last name derived from O' Raghallaigh, Reilly means "descendant of Raghailleach," referring to the familial lineage of those who originally carried the title. If you love animated movies, you may recognize this name from Disney Pixar's Inside Out, where protagonist Riley Andersen learns to adjust to complex life changes. With this in mind, baby Reilly may be inspired to take on the world with a brave and adventurous spirit, journeying toward their hopes and dreams.