This study examined the relationship between external auditing and the financial performance of Sebbi International Limited, Entebbe, Uganda. The study was motivated by growing concerns about the role of external auditors in enhancing organizational financial accountability, transparency, and performance. Using a mixed-methods research design, data were gathered from 82 respondents comprising management staff, accountants, auditors, and board members. Structured questionnaires and interview guides were employed as data collection instruments. Descriptive and inferential statistics, including Pearson correlation and regression analysis, were used to analyze quantitative data. Findings revealed a strong positive relationship between external auditing quality and financial performance (r = 0.78, p < 0.01). The study concluded that external auditing significantly improves financial reporting quality, reduces misstatements, and enhances investor confidence. It recommended that Sebbi International Limited strengthen its engagement with accredited external auditors and adopt international financial reporting standards to sustain financial growth.