The surname Day has its origins in Old English, and is derived from the word “daeg,” meaning “day.” It was originally a nickname for someone who was lively and active during the daytime. The name is fairly common in English-speaking countries, and can be found in various forms, including Daye, Dayman, and Daymond. Famous individuals with the surname Day include actress Doris Day and musician Howie Day. The name continues to be passed down through generations, representing a connection to one’s heritage and family history.