Although refractory aggregates are indispensable components of ordinary refractory ceramics, systematic studies on their morphology and impact on the performance of ordinary refractory ceramics are lacking. This paper aims to address this gap by providing an overview of the morphological parameters and methods commonly used in civil engineering to characterize aggregates on different scales, namely, form, angularity, and texture. Moreover, this paper is expected to help refractory researchers better understand the morphology of refractory aggregates for the deliberate design of ordinary refractory ceramics.