The informal sector in urban South Sudan is a significant but understudied component of its economy and legal framework. A mixed-methods approach combining qualitative interviews with quantitative survey data to explore perceptions of legality among urban South Sudanese entrepreneurs. Entrepreneurs in urban areas reported a preference for operating informally due to legal uncertainties and corruption, despite acknowledging the risks associated with non-compliance. The study highlights the complex interplay between law and informal practices in urban South Sudan, suggesting a need for more targeted regulatory reforms that address perceived injustices. Policy recommendations include developing clearer laws governing informal sector activities and enhancing enforcement mechanisms to reduce corruption and improve compliance. Informal Sector, Urban Development, Law Reform, South Sudan