All over the world, Gruendel (Gruendel 
) is an extremely rare unknown gender forename. Much more prevalently, Gruendel is the last name as well as the forename.
Mr, Tina, Fran, Olaf, Marie, Megan, Steve, April, Clare, Kathy, Todd, Katie, Kerry, Petra, Peter, Ralph, David, Dylan, Grace, James, Joann, Kelly, Tracy, Jeff, Joni, Ms, Max, Ann, Amy, Kai, Kim, Ray, Tom, Mike, Jody, Andy, Bert, Karl, Paul, Rick, Dean, Dave, Greg, Lisa, John, Anke, and Nancy