Kailey (/keɪli/) is a modern English feminine first name. It is a spelling variant of Kaylee^[1] that became popular in the US following the release of the British rock group Marillion's song "Kayleigh" in 1985.

Kailey is also an Indian, Sikh Punjabi surname.^{[citation needed]}

• Kailey Leila, Canadian-born Guyanese footballer
• Kailey Willis, Maltese footballer

• Maninder Kailey, Indian Punjabi songwriter
• Matt Kailey (1955–2014), transgender American writer and activist

• Kailey Hopkins, American Girl character

• Kaylee, a given name; includes Kayli
• Kayleigh (disambiguation); includes Kaliegh
• Kaley (disambiguation)
• Kaili (disambiguation)