Haylee is a spelling variant of Hayley, an English surname and place name from the Old English heg and leah, which together mean "hay clearing" or "hay meadow". Actress Hayley Mills made the name a first name in the 1960s, and the -lee spelling followed the Kaylee and Rylee fashion. In the United States Haylee ranked number 260 in 2000, peaked at number 211 in 2009 and has fallen since, leaving the top 1000 in 2022 and standing at number 1419 in 2025.