In this article, rheological properties of polyaniline (PANI) doped with diisooctyl phosphate (DIOHP) are described. Rheological properties of this material depend strongly on the content of the dopant. For low concentrations, the material is rather stiff but becomes a Bingham or St. Venant body for higher contents of the dopant. Rheological parameters for samples containing various molar ratios of PANI to DIOHP were determined.