A supporting information-infrastructure for implementing sustainability assessment into process design is strongly needed. This study proposes activity and data models for process assessment that take sustainability into account. Firstly, existing assessment methods and indicators were extracted and systematically clustered by a bibliometric analysis based on citation network. Based on the specified clusters on existing cases of sustainability assessment, a commonly applicable activity model was developed by using the integrated definition method type 0 (IDEF0). The structure of required data for applied assessment methods was visualized by using unified modeling language (UML). By tracing existing projects on process assessment onto the proposed models, it was confirmed that some assessment methods such as life cycle assessment, risk assessment, and material flow analysis are easily executable based on the proposed models.