This study examines the relationship between audit committee characteristics and firm performance among manufacturing firms listed on the Indonesia Stock Exchange during 2020–2024. It considers audit committee size, independence, meeting frequency, financial expertise, gender diversity, and tenure, with firm performance measured using Tobin’s Q. Secondary data were obtained from Bloomberg and companies’ annual reports and financial statements. Purposive sampling and outlier screening yielded 495 firm-year observations. Panel data regression was estimated using a fixed effects model, controlling for firm size, leverage, and listing age. Financial expertise was positively and significantly associated with firm performance, whereas committee size, independence, and tenure were negatively and significantly associated with performance. Meeting frequency and the presence of female committee members were not statistically significant. These findings suggest that the financial competence of audit committee members deserves particular attention when firms evaluate the effectiveness of their oversight arrangements. The results should be interpreted as associations because the research design does not establish causality.