Public trust in parliament is a cornerstone of democratic legitimacy, yet in many emerging democracies this trust remains persistently low despite the existence of formal legislative oversight mechanisms. This study examined citizen trust in parliament as a function of oversight visibility and media coverage, and specifically tested whether media exposure mediates the relationship between the visibility of parliamentary oversight activities and the level of trust citizens place in the institution. A quantitative, cross-sectional survey design was adopted, drawing a sample of 420 adult citizens selected through multistage stratified random sampling across four regions. Data were collected using a structured questionnaire that measured oversight visibility, media exposure, and citizen trust in parliament on standardized 0-100 indices, alongside demographic covariates including age, gender, education, residence, and region. Data were analysed using univariate statistics to characterise the sample and key variables, bivariate Pearson correlation and independent samples t-tests to examine pairwise associations, and multivariate ordinary least squares regression following the Baron and Kenny causal steps approach to test the mediation hypothesis, with bootstrapped resampling (5,000 iterations) and a demographically adjusted model used as sensitivity analyses. The results showed that oversight visibility was significantly and positively associated with both media exposure (r = 0.425, p < 0.001) and citizen trust (r = 0.392, p < 0.001), and that media exposure was the strongest correlate of trust (r = 0.481, p < 0.001). The mediation analysis indicated that the direct effect of oversight visibility on trust remained significant after accounting for media exposure (c' = 0.196, p < 0.001), while the indirect effect through media exposure was also significant (a×b = 0.140; Sobel z = 6.298, p < 0.001; bootstrap 95% CI [0.100, 0.183]), indicating partial mediation, with media exposure accounting for approximately 41.7 percent of the total effect. The sensitivity analysis confirmed the robustness of these findingsafter adjusting for demographic covariates, although residence and region emerged as additional significant predictors of trust. The study concluded that media coverage substantially amplifies, but does not fully explain, the relationship between visible oversight and citizen trust, underscoring the joint importance of institutional transparency and an active, accessible media in sustaining democratic legitimacy. The study recommends that parliaments institutionalise proactive public disclosure of oversight activities, strengthen partnerships with media houses to improve coverage of oversight work, and invest in civic education to help citizens interpret oversight information independently of media framing.