In the world, Demcak (Demcak 
) is an extremely rare unknown gender forename. Much more prevalently, Demcak is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Demcak | Canada, United Kingdom, United States, Slovakia, Czechia |
Mr, Lukas, James, Jakub, Jozef, Tomas, Nancy, Marian, Martin, Michal, Samuel, Stefan, Stuart, Andrew, Robert, Daniel, George, Janice, Tracee, Michael, Antonio, Carolyn, Lacey, Claudia, Diane, Derek, Jan, Mary, Mark, Sara, Paul, Dave, John, Igor, Maria, Marek, Megan, Susan, Steve, Scott, Carol, Katie, Kayla, Pavel, Pavol, Peter, Raduz, David, and Dominik