Background: Virus Resistant Cassava for Africa (VIRCA) is an agricultural biotechnology public-private partnership (PPP) comprising the Donald Danforth Plant Sciences Center (DDPSC), National Agricultural Research Organization (NARO) of Uganda and Kenya Agricultural Research Institute (KARI). The project seeks to develop virus-resistant cassava for farmers in Kenya and Uganda. Yet, there is much public skepticism about the use of genetically modified (GM) crops and private sector involvement in Africa. This case study sought to understand the role of trust in the VIRCA partnership. Methods: We conducted semi-structured, face-to-face interviews to obtain stakeholders' views on the challenges to, and practices for, building trust in the VIRCA partnership. Interviewee responses, together with relevant documents and articles, were analyzed to generate descriptions of how trust is operationalized in this evolving agbiotech PPP. Data were analyzed based on recurring and emergent themes from the interviewee responses.