In the entire world, Luetke (Luetke 
) is an extremely rare unknown gender first name. Much more frequently, Luetke is the last name as well as the forename.
Mr, Jean, Teia, Elsa, Eloy, Hans, Ines, Iria, Igor, Maria, Joel, Mario, Molly, Sarah, Sofia, Scott, Albin, Almir, Angel, Angie, Chris, Marco, John, Jair, Luci, Ms, Art, Amy, Kay, Rex, Dan, Don, Joe, Eli, Ivo, Mary, Mark, Matt, Maya, Mike, Cami, Barb, Kate, Paul, Dawn, Lisa, Brian, and Bryan