This paper explores the association between supplier management orientation (SMO), information integration (II), organizational culture (OC) and supplier delivery performance (SDP). A systematic questionnaire survey was employed to gather cross-sectional data from 403 manufacturing firms in Uganda's Greater Kampala Metropolitan Area were analyzed using SmartPLS 4. The study shows a full mediating role of OC in the relationship between SMO, II and SDP. A positively significant relationship was established between II and OC, and between OC and SDP. Also, the relationship between SMO and OC was positively significant. Whereas the effect of SMO, II, OC on SDP is significant, related literature remains limited. This signifies a deficiency in the current literature that necessitates additional research to investigate other external factors that substantially impact SDP. Managers need to nurture cultural qualities, like teamwork, openness, and responsiveness, that enhance employees to effectively interpret information and act in a coordinated manner. This study extends the Resource-Based View Theory to the SDP domain, by drawing insights on the mediating role of OC in the relationship between SMO and SDP.