Cognomen Ratzan (Ratzan 
) , all over the world, is a rare surname. The family name Ratzan is characteristic of Guatemala, where it is quite a rare surname, and the United States, where it is a very rare surname.
| william ratzan researcher ORCID ID = 0000-0002-3426-2477 |
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| david m. ratzan classicist and academic librarian |
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| scott c. ratzan public health researcher |
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| richard m. ratzan member or fellow of the New York Academy of Medicine |
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| richard m ratzan researcher |
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Amy, Chris, Brian, Byron, Karen, Katie, Peter, Penny, Robin, Robyn, David, Dawne, Jacob, Nancy, Eliza, Elias, Isaac, Stuart, Andrea, Carlos, Baylar, Brayan, Aaron, Scott, Susan, Mycki, Rob, Lee, Mary, Mery, Kama, Ruth, Dena, Dora, Lara, Leah, Rachel, Lino, Luis, Jose, John, Juan, Jill, Tami, Noah, Evan, Omer, Maria, Lori, and Robert