This study identified the need for theory building within interior design through the examination of content published in the Journal of Interior Design. From 1975 to 1991, the iournal was called the Journal of Interior Design Education and Research (JIDER) and then in 1992 was renamed the Journal of Interior Design (JID). Specifically, the purpose of this study was to identify all the theories reported in JIDER/JID from 1975 to 2008 to explore the extent to which theory is represented and applied to interior design and to identify any theories unique to the field. This journal was selected since it represents a refereed journal dedicated to the design of interior environments and serves as a credible source to explore the presence of theory in the body of knowledge. The findings identified that the theories, reported in JID, were primarily borrowed from the social sciences. In addition, the findings provided sample definitions of interior design theories cited in JID, and offered suggestions concerning why there is limited theory cited. Finally, themes and subthemes emerged that shaped a model, which offers a representative image of theory in JID and the presence of theory in the body of knowledge. This study is but the first stage in the process of identifying and building theory specific to interior design. Future areas of research are suggested to shape additional conversations concerning interior design scholarship focused on theory building and development.The design of interior spaces revolves around human beings, human life, and human activities. Human behavior is unpredictable, messy, and creative; therefore, theories are not always predictive or easy