Sunday is an English word name that means exactly what it says, the "day of the sun", from the Old English sunnandaeg, a translation of the Latin dies solis. As a first name it was rare until Nicole Kidman and Keith Urban named their daughter Sunday Rose in 2008; it joins other day and month names like June and Wednesday. Sunday has climbed from number 5279 in 2015 to number 947 among girls' names in 2025, its first year in the US top 1000.