The objective of SIG - Design Creativity is to study creativity in design. We have not sufficiently clarified creativity, especially in the context of design, although it is a very interesting characteristic in the thinking process of humans. This research discusses creativity in design instead of trying to identify its standard characteristics. That is, it tries to answer the question “What is design?” from the viewpoint of creativity, for two perspectives. First, this SIG discusses the characteristics of creative thinking (i.e. creativity in synthesis) in the process of forming new concepts rather than understanding it ‘as is’. This means that, characteristics of creativity in cognition and conceptual understanding (i.e. creativity in understanding) are not the central scope of discussion in this SIG, while pursuing them should help the SIG to clarify the creativity of design. Second, this SIG explores the characteristics that are common and specific to diverse kinds of design, such as engineering and industrial design. We expect that the results of our study will help to clarify the “Essence of Design.”