The Sunzhensky otdel was a Cossack district (') of the Terek oblast of the Caucasus Viceroyalty of the Russian Empire. The area of the Sunzhensky otdel makes up part of the North Caucasian Federal District of Russia.
The subcounties (uchastoks) of the Sunzhensky otdel were as follows:
According to the Russian Empire Census, the Sunzhensky otdel had a population of 115,370 on , including 58,502 men and 56,868 women. The majority of the population indicated Ingush to be their mother tongue, with significant Russian and Kabardian speaking minorities.
According to the 1917 publication of Kavkazskiy kalendar, the Sunzhensky otdel had a population of 74,505 on , including 37,527 men and 36,978 women, 64,420 of whom were the permanent population, and 10,085 were temporary residents: