The investigation on brittle-ductile transition has become of central importance in many geologic situations. This paper aims to study the relationship between brittle-ductile transition stress, uniaxial compressive strength, and Hoek-Brown material constant (mi). To fulfill this goal, a significant amount of data from literature were selected and analyzed. Additionally, transition stress was determined based on the combination of Hoek-Brown failure criteria and the recently used transition-ductile stress limit. New non-linear correlations were established between uniaxial compressive strength and Hoek-Brown material constant (mi) for different rock types. The obtained results demonstrate a good correlation between uniaxial compressive strength and transition stress for igneous, sedimentary, and metamorphic rocks; however, the correlation was not notable between Hoek-Brown material constant (mi) and transition stress for sedimentary and metamorphic rocks.