Surname Karl Friedrich (Karl Friedrich 
) , globally, is an extremely rare cognomen. The family name Karl Friedrich is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more frequently, Karl Friedrich is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Karl Friedrich | Germany, Austria, Italy, Spain, Philippines |
Carl Frederik, Carlo Federico, Carlos Frederico, Charles Frederick, Karl Fredrik, and Karl-Friedrich
Mina, Zeller, Ziemer, Mabutol, Müller, Sautter, Seifert, Schmidt, Schmitt, Spelsberg, Riether, Goergen, Nolting, Neumann, Eckhoff, Fisseler, Mählmann, Sattmann, Schleier, Kohlmann, Ragragio, Schneider, Wagner, Engler, Netzer, Gruner, Buck, Kern, Roth, Rech, Dick, Jung, Mller, Jacob, Nöll, Habel, Wollenweber, Vogel, Wecke, Marsch, Schulz, Castro, Bicker, Rausch, Rommel, Rüsche, Rüger, Groger, Weber, and Schürmann