In all the world, Knopke (Knopke 
) is an extremely rare male forename. Much more prevalently, Knopke is the last name as well as the forename.
Mr, Paul, Rose, Rean, Rich, Gary, Greg, Lutz, Jane, Jari, Bill, John, Jena, Jeff, Elsa, Hans, Voni, Fred, Maria, Marie, Maura, Jenn, Sarah, Bodo, Carl, Ms, Amy, Ben, Kim, Don, Jim, Tom, Tim, Ian, Cara, Mary, Mery, Mike, Skip, Alex, Andy, Anna, Anne, Anja, Amie, Mark, and Shane