Although traffic emits both air pollution and noise, studies jointly examining the effects of both of these exposures on blood pressure (BP) in children are scarce. We investigated associations between land-use regression modeled long-term traffic-related air pollution and BP in 2368 children aged 10 years from Germany (1454 from Munich and 914 from Wesel). We also studied this association with adjustment of long-term noise exposure (defined as day–evening–night noise indicator “Laden” and night noise indicators “Light”) in a subgroup of 605 children from Munich inner city. In the overall analysis including2368 children, NO2, PM2.5mass (particles with aerodynamic diameters below 2.5 micro m), PM10mass (par-tiles with aerodynamic diameters below 10 micro m) and PM2.5absorbance were not associated with BP. When restricting the analysis to the subgroup of children with noise information (N = 605), a significant association between NO2and diastolic BP was observed (−0.88 (95% confidence interval: −1.67, −0.08)).However, upon adjusting the models for noise exposure, only noise remained independently and significantly positively associated with diastolic BP.