Detention Complex 26 was a facility for detaining Suliban living in the Tandar sector. Located on a Tandaran moon, it was overseen by Colonel Grat. The complex was protected with pulse cannons.

Captain Jonathan Archer and Ensign Travis Mayweather were imprisoned here in January of 2152. With the help of Enterprise, they managed to escape the complex and free the eighty-nine innocent Suliban imprisoned there. (ENT: "Detained")