In the entire world, Kortje (Kortje 
) is an extremely rare unknown gender given name. Much more frequently, Kortje is the last name as well as the forename.
Mr, Marie, Mandy, Malie, Megan, Miles, Sarah, Shawn, Susan, Alida, Maria, Allan, Angie, Craig, Brian, Byron, Karin, Karen, Karel, Kevin, Keano, Allen, Klaas, Wadi, Eric, Mel, Kim, Jan, Jay, Zoe, Skot, Abel, Barb, Beth, Ivan, Paul, Gail, Lisa, Lori, Jana, John, Jodi, Theo, Tina, Esme, Dawn, and Penny