A variant of Andi or Andy, from Andrew, meaning "manly" or "brave."
Andee is a playful, gender-fluid spelling of Andy — itself a diminutive that has lived a long and lively life as a stand-alone name. The roots run deep: Andrew derives from the Greek Andreas, built on the word aner (genitive andros), meaning "man" in the sense of human strength and virtue. Saint Andrew, one of the twelve apostles and the patron saint of Scotland, Greece, and Russia, carried the name into Christian history with enduring effect, and Andrew became one of the most reliably popular names in the Western world for well over a thousand years.
The nickname Andy softened that gravitas into something approachable and warm, and by the 20th century it had taken on a distinctly American informality. Andy Warhol turned it into an emblem of cool avant-garde culture; Andy Griffith gave it wholesome Southern charm; the Toy Story franchise's Andy made it the name of childhood imagination itself. The feminine spelling Andee began appearing as parents — particularly in the mid-to-late 20th century — sought to give daughters the strong Androsian roots while signaling with the "ee" ending that the name belonged to a girl.
Andee occupies a lively cultural space today, carrying both the ancient dignity of Saint Andrew and the breezy confidence of American pop culture. The distinctive spelling makes it visually immediate — you know at a glance how to say it and that this particular person has made it her own. It suits an era increasingly comfortable with names that move fluidly across gender lines, wearing their heritage lightly while announcing their bearer's individuality clearly.