Social and behavior change (SBC) professionals have often been tasked to find ways to influence knowledge, attitudes, and practices, about vaccines. Now that the COVID-19 vaccines are becoming available worldwide, renewed emphasis and urgency for SBC efforts arise. To that end, WHO has offered three factors that play a role in vaccine hesitancy, the first two of which can be addressed by SBC: Complacency: Low perceived risk of vaccine-preventable diseases, and vaccination not deemed necessary. Other life/health issues are a greater priority. Confidence: Low levels of trust in vaccines, in the delivery system, and in health authorities Convenience: Barriers related to geographic accessibility, availability, affordability, and acceptability of services This resource page provide a selection of SBC research, tools, and examples that aid in understanding this issue, especially in light of the recent availability of COVID-19 vaccines and the urgency for immunization worldwide.