Egyptians Ramy Ashour and Karim Darwish
In the first PSA world ranking since December 2005, no Egyptians feature in the top three spots, as Ramy Ashour, Karim Darwish and Amr Shabana were relegated to the fourth, fifth and sixth places, respectively.
Englishman James Willstrop and Frenchman Gregory Gaultier, meanwhile, climbed to second and third place respectively, following impressive performances in November.
Willstrop, 28, was rewarded for his career-best month after winning the Hong Kong Open and Kuwait PSA Cup, beating Karim Darwish in both finals.
Englishman Nick Matthew, for his part, remains comfortably in the top seed for the 12th month in a row.