Atçalı Kel Mehmet Efe (c. 1780–1830) was a Zeybek who led a local revolt against Ottoman authority and established control of the Aydın region for a short period between 1829 and 1830 (during the reign of Mahmud II).
Inspired by the tiny dog, Mehmet established an analogy between the situation and the relation between the Ottoman reign and Anatolian peasants, and decided to go out to the mountains as an outlaw.
In 1829, Mehmet started a revolt in Kuyucak a town near Atça, demanding tax cuts, fair laws, and shorter military service.
As the people were tired of the heavy tax load and endless military service from continuous wars of the declining empire, he quickly gained popularity.
Obviously the Padishah didn't approve of Atçalı's rule, and sent his forces to regain control of Aydın.