Last name الصيفي (الصيفي 
, Essifi 
) , in all the world, is a common cognomen. The cognomen الصيفي is characteristic of Palestinian Territory, where it is quite a common surname, Jordan, and Egypt, where it is quite a rare surname. Much less frequently, الصيفي is the forename as well as the last name.
| VARIANT | COUNTRY |
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| الصيفي | Saudi Arabia, Yemen, Palestinian Territory, Egypt, Jordan |
| Essifi | Tunisia, Morocco, France, Germany |
| حسن الصيفي Egyptian film director (1927-2005), EG (b. 1927) |
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| مصطفى الصيفي Palestinian journalist and poet, PS (b. 1938) |
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أشرف أمجد الصيفي Qatari hammer thrower, QA (b. 1995) |
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| مريم الصيفي Palestinian poet, PS (b. 1945) |
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| الصيفي مبارك الصيفي KW (b. 1961) |
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| منال الصيفي Egyptian director, EG |
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| عدي الصيفي Jordanian footballer, JO (b. 1986) |
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| عمرو الصيفي EG |
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