Family name Karuga (Karuga 
) , across the world, is a common cognomen. The surname Karuga is characteristic of Kenya, where it is quite a common surname, United Arab Emirates, where it is a rare surname, and Saudi Arabia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Kenya, the United States, and United Arab Emirates. Much less frequently, Karuga is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Karuga | Kenya, Saudi Arabia, United States, Poland, United Arab Emirates |
| wincenty karuga PL (b. 1906) |
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| rosemary karuga Kenyan visual artist, KE (b. 1928) |
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| wilfred koinange karuga b.17 August 1939 d.27 August 2012 (b. 1939) |
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| karuga wandai (b. 1945) |
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| filip franciszek karuga researcher |
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Mr, Tara, Tony, Eric, Fred, Moses, Mercy, Mburu, Sarah, Sammy, Simon, Susan, Alice, Agnes, Chris, Carol, Caleb, Cathy, Cindy, Cyrus, Kevin, Peris, Judy, John, Jack, Jane, Ms, Sam, Ann, Ben, Ken, Dan, Joe, Job, Nia, Ewa, Peter, Mary, Mike, Saya, Alan, Andy, Anne, Beni, Beth, Paul, Leah, Lucy, Mark, and Rahab