In the entire world, Rüffer (Rüffer 
) is an extremely rare unknown gender given name. Much more prevalently, Rüffer is the last name as well as the forename.
Kai, Tina, Nick, Nina, Elly, Erik, Hans, Irma, Maria, Marie, Mario, Marco, Mandy, Andre, Anita, Claus, Cindy, Bernd, Karin, Karen, Kevin, Klaus, Jens, Leon, Gerd, Dirk, Lea, Jan, Ole, Udo, Ute, Uwe, Marc, Sven, Anna, Anne, Peter, Anja, Adam, Axel, Karl, Kurt, Knut, Paul, Peer, Rolf, Rene, Ruth, Anke, and Danny