The objective of the research study was to determine the effect of complexation of starches oxidised with mineral elements on their rheological properties. Potato and spelt wheat starches were oxidised using chlorate (I) sodium and, next, they underwent complexation with potassium, magnesium, or iron ions. The rheological analysis of the starches comprised the determination of their intrinsic viscosity and pasting profile. Moreover, the flow curves of starch pastes were determined as were the mechanical spectra of starch gels. Based on the results obtained, it was found that the complexation of starches oxidised with metal ions caused the intrinsic viscosity of the starches to decrease and the rheological properties of the starch pastes and gels to change. The rheological properties of pastes and gels of starches oxidised with metal ions depended on both the modification type and the botanical origin of the starches.