This study highlights how multi-stakeholder cooperation and digital technologies can improve the efficiency and transparency of sustainable procurement in Nigeria. Nigeria’s SDGs have been hampered by the numerous issues with government procurement brought on by corruption and inefficiency. A quantitative descriptive survey design was used in the study, which involved 341 stakeholders from the public, private, civil society, and community sectors. ANOVA and other descriptive and inferential statistics were employed in the data analysis. The study’s conclusions established the Technology-Organisation-Environment (TOE) framework by showing that digital technologies, particularly e-procurement and data analytics, significantly increase efficiency (Mean = 3.99) and have a high potential for preventing fraud. However, the study found systemic issues include resistance to institutional change, high costs of green procurement, and low stakeholder cooperation (Mean = 2.77). The stringent monitoring system (mean=4.12) and government policies (mean=4.04) were the key facilitators. Good policymaking alone won’t produce sustainable procurement results in Nigeria; investments in digital infrastructure, increased regulatory framework enforcement, and inclusive, high-trust multi-stakeholder engagement are essential to bridging the gap between policy and implementation.