This dissertation includes a review of the instructional design competencies literature and a mixed-methods study on instructional design (ID) competencies. A literature review was conducted to identify ID competencies reflected in the literature and to compare those competencies to International Board of Standards for Training Performance and Instruction's (ibstpi) 2012 ID competency model. The literature review revealed alignment between the competencies found in the studies and the ibstpi standards. A study was conducted to identify the most important competencies for ID practitioners and to determine the degree to which those competencies align with the 2012 ibstpi ID competencies. The study included two data methodologies: (1) an online survey tool and (2) follow-up interviews. Study data found that the competencies most valued by ID professionals aligned with the 2012 ibstpi ID competency model. The data suggested, however, that the value of individual competencies varied when work setting was considered.