People living with HIV may move between health facilities: this is called 'transfer', and includes up- and down-referral based on clinical condition and lateral transfer (e.g. between primary healthcare [PHC] facilities for reasons such as geographic mobility or stigma). Transfers involving PHC facilities occur frequently and are associated with viraemia and disengagement. We reviewed the South African National Department of Health (NDOH) and Southern African HIV Clinicians Society websites and contacted NDOH officials to identify national guidelines applicable to HIV care in South Africa for recommendations on transfers involving PHC facilities. In total, 21/24 (88%) documents mentioned transfer, using the terms 'referral', 'linkage', 'transfer', 'transition' and 'handover'. Guidelines defined 'linkage to care' as connecting individuals to care after HIV testing, but other terms were not well defined. Documents emphasised transfers between different levels of the health system, and transfers between PHC facilities received limited attention. The transfer process was delineated for linkage to care, up- and down-referrals, but not for transfers between PHC facilities. Clinical management of patients transferring between PHC facilities and tracing of patients who requested transfers and missed their visits were not specified. Overall, transfers between PHC facilities were not well addressed and require attention to improve HIV treatment outcomes.