Board certified behavior analysts (BCBAs) are required to accrue continuing education units (CEUs) every 2 years, and to regularly engage in professional development. Identifying sources of CEUs and professional development activities, what factors BCBAs consider when choosing them, and their preferences and opinions could help inform the provision of CEU and professional development activities. However, little is known about those collective sources nor the preferences of behavior analysts in obtaining them. We surveyed individuals certified as BCBAs or board certified assistant behavior analysts through the Behavior Analyst Certification Board mass e-mail service to identify trends in CEU accruement and professional development and factors driving individuals to certain sources over others. Respondents indicated they value and believe peer-reviewed articles, in-person conferences, and well-known speakers over less verifiable sources such as social media platforms (e.g., Facebook groups or podcasts). Implications for improving the accessibility of high-quality sources of CEUs and professional development are discussed.