Family name Efseaff (Efseaff 
) , across the world, is a very rare cognomen. The surname Efseaff is characteristic of the United States, where it is a very rare surname, Canada, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Efseaff | Canada, Brazil, United States, Australia |
Joy, Morrie, Sharen, Andrea, Katsya, Philip, Daniel, Dausha, George, Lukian, Joshua, Jeremy, Nadsya, Eyoseph, Matthew, Michael, Sasanna, Barbara, Rebekah, Deborah, Jessica, Timothy, Mariya, Natasha, Yakov, Nadya, Esi, Alex, Beky, Paul, Luke, Luba, John, Nick, Sandy, Sheri, Susan, Sonya, Carly, Karli, Peter, David, Diane, Laura, Janet, Tanya, Nadia, Emily, and Nikolai