"Blend of Kort and Lyn"
The name Kortlyn is commonly a female name from the "American" origin.
Kortlyn is a modern American formation that pairs the suffix -lyn, widespread in American girls' names, with a K- spelling of the Court- element found in Courtney and in the American respelling Kortney. The name first appears in United States birth records in 1997, with no recorded use before that year.
The pronunciation of Kortlyn is KORT-lin.