Variant of Harlow, from Old English here (army) + hlaw (hill), meaning 'army hill.'
Harlo is a modern variant of Harlow, an Old English place-name meaning "rock hill" or "army hill," from the elements "hær" (rock or grey) and "hlaw" (hill or mound). Like many Old English topographic surnames, it spent centuries as a place name and family name before being adopted as a given name — a trajectory now common in contemporary naming culture. The slightly stripped spelling, dropping the final 'w,' gives it a leaner, more modern silhouette while preserving the name's vintage sensibility.
The name's most glamorous historical echo is Jean Harlow (1911–1937), born Harlean Harlow Carpenter, the platinum-blonde Hollywood icon whose dazzling screen presence in films like "Red Dust" and "Dinner at Eight" made her one of early cinema's defining stars. She died tragically at twenty-six, and her brief luminous career enshrined the name Harlow in the golden age of Hollywood mythology. More recently, Nicole Richie and Joel Madden named their daughter Harlow in 2008, helping launch the name into the modern consciousness as a stylish, vintage-feeling choice.
Harlo, as the slightly unconventional spelling, appeals to parents who want that same evocative quality — the whisper of old Hollywood, the sturdy Anglo-Saxon roots — with a slightly more individualized stamp. It sits comfortably among the current wave of short, strong, gender-flexible names that feel both nostalgic and forward-looking. Whether given to a boy or a girl, Harlo carries an easy confidence, a name that sounds like it belongs to someone who knows exactly who they are.