The Baltic Sea has been heavily impacted by harmful and persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethanes (DDTs), and hexachlorobenzene (HCB), with peak emissions occurring between 1960 and 1980. Despite restrictions on their production and use implemented over 40 years ago due to concerns about their threats to marine wildlife and consumers, POPs remain at elevated concentrations. Their persistence in the environment underscores the need for long-term monitoring. This study presents a 30-year (1993-2022) dataset on POP concentrations in Baltic Sea surface sediments, providing insights into their spatial and temporal dynamics. PCB concentrations averaged 3.66 ± 2.89 ng g-1 dw (∑7PCB), with a calculated half-life time of 21.6 ± 1.9 years. DDT and its metabolites showed persistently high concentrations with no observable decrease, while HCB levels exhibited an increase despite regulatory bans. Sediment characteristics in the Baltic Sea were found to strongly influence POP accumulation and redistribution, with shorter residence times at sandy compared to muddy stations. In 5 % of analyzed samples, the most toxic PCB congener PCB118 still exceeds the Environmental Assessment Criteria (EAC) of 0.6 ng g-1 2.5 % TOC. For ∑4DDT, 57 % of samples had a 25-75 % probability of ecological effects, indicating ongoing environmental risks. Global comparisons reveal that POP concentrations in Baltic Sea sediments are comparable to those in other marine regions, reflecting global redistribution processes and ongoing emissions. These findings provide a comprehensive overview of the long-term temporal and spatial behavior of POPs in marine sediments following their regulatory ban.