A total of 64 players including the 56 highest ranked players and eight wild card entrants will compete for $325,000 cash prize.
The Egyptian defeated Germany’s Simon Rosner in the final.
The Egyptian, who was the tournament favourite, had reached the final in the last five consecutive events.
The world's best players are participating in the tournament which will take place from October 27 to November 2.
Al Tamimi's coach Geoff Hunt says moving overseas has immensely helped in the Qatari's growth.
The Aspire Academy graduate defeated Tsz Fung Yip of Hong Kong in the final.
The eight-time world champion, currently ranked sixth in the world, is lining up for her sixth Commonwealth Games.
The 23-year-old lost to Spanish second seed Iker Pajares in the final
He overcame mixed emotions by beating his brother Marwan 11-5, 9-11, 11-7, 9-11, 11-6
The Qatar ace lost to World No.4 Nick Mathew
Top seed Al Tamimi defeated Egypt’s Karim El Hammamy in straight games to win the Qatar Circuit No.4 title
The Egyptian defeated compatriot Tarek Momen for his third Qatar Classic title
El Shorbagy defeated World No.1 Gregory Gaultier while Momen cruised past Simon Rosner
Egypt’s Tarek Momen will meet Germany’s Simon Rosner in the other last-four clash
Yousef Essam Farrag, a grade seven student-athlete, won the Under-13 category