Cortlyn is of American origin, derived from English names like Courtney and Carolynn. It means 'from the short nose settlement'. The name gained popularity during the late 20th century, peaking in the mid-1990s. Cortlyn is often associated with creativity and uniqueness due to its contemporary spelling variation.
"Cortlyn saw peak popularity between 1998 and 2004 with 17 to 19 births annually, then declined steadily from 2005 onwards, reaching as low as 5 births in 2021."