Jacylyn, derived from the Latin 'Iacobilus', meaning 'supplanter' or 'held by the heel', is an uncommon yet distinctive given name of American origin. It gained prominence in the late 20th century, with its first notable usage being in the 1970s. The name Jacylyn typically follows the phonetic spelling of /ˈdʒæsɪlɪn/, though variations such as Jaclyn and Jacalyn are also found. It is often associated with namesake Jacylyn Dial, an American professional wrestler known for her time in World Wrestling Entertainment (WWE) during the early 2000s.
Jacylyn was popular in 1977 with 5 births that year. In 1986, there were 6 babies named Jacylyn for a total of 11 children bearing this name over these two years.