Cognomen Girtz (Girtz 
) , across the world, is a rare family name. The cognomen Girtz is habitual in the United States, where it is a very rare surname, New Zealand, and Canada, where it is an extremely rare surname. In absolute terms, the name is most common in the United States, Germany, and New Zealand.
| VARIANT | COUNTRY |
|---|---|
| Girtz | Germany, United Kingdom, South Africa, United States, New Zealand |
|
kelly girtz Mayor of Athens-Clarke County, Georgia, US (b. 1971) |
|
| josh girtz college basketball player (1997–1998) Sam Houston State |
|
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| brandon girtz mixed martial artist, US (b. 1985) |
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Al, Kari, Kyle, Paul, Pete, Doug, Gail, Gene, Leah, Lisa, Jane, Jack, Jake, John, Jody, Jeff, Jude, Judy, Jill, Todd, Tina, Eial, Bill, Herb, Brad, Chad, Jo, Sue, Amy, Bob, Kit, Pat, Pam, Ron, Roy, Don, Lee, Joe, Tom, Ted, Mary, Mark, Mara, Mike, Sara, Anne, Adam, Barb, and Izzy