Subject matter experts play an essential role in technical curriculum development by providing accurate and up-to-date information that matches education, training, and workforce needs. The Subject Matter Expert (SME) COMlist is proposed as a tool that enables instructional developers to evaluate an SME's capability and suitability to support curriculum development. The COMlist provides a spreadsheet-based, single-entry scoring system that automatically calculates individual scores on six factors, provides an overall SME score, and generates a profile that illustrates an SME's strengths and weaknesses. The value of the SME COMlist is based on its simplicity of design, ease of use, and usefulness in selecting SMEs who can competently support curriculum development. This study argues that technical expertise is essential but not sufficient for providing the best support. The problem investigated here is the identification of an SME's personal and professional qualities that will provide the instructional developer the most efficient and effective support to the knowledge extraction process and subsequent revision and finalizing of the technical material. (Contains 2 tables and 2 figures.)