Shib Ab District (Persian: بخش شیب‌آب) is a former administrative division of Zabol County, Sistan and Baluchestan province, Iran. Its capital was the city of Mohammadabad.

At the 2006 National Census, its population was 43,374 in 9,809 households. The following census in 2011 counted 41,520 people in 10,623 households.

In September 2013, the district was separated from the county in the establishment of Hamun County, which was divided into two districts of two rural districts each, with the city of Mohammadabad as its capital.

Shib Ab District Population

Administrative Divisions	2006	2011
Kuh-e Khajeh RD	6,482	1,601
Lutak RD	14,019	13,167
Mohammadabad RD	14,489	13,641
Teymurabad RD	6,209	5,879
Mohammadabad (city)	2,175	2,681
Ali Akbar (city)		4,551
Total	43,374	41,520
RD = Rural District