Importance Drug survival is an important measure to help guide treatment selection. However, clinical evidence for newer biologics, including bimekizumab, is limited. Objective To determine the drug survival of biologics used for treating psoriasis in a routine clinical practice setting. Design, Setting, and Participants This cohort study was based on data from the DERMBIO registry, which includes all patients treated with biologics for psoriasis in Denmark. All adult patients enrolled in DERMBIO from its inception in May 2007 until June 2025 were assessed for eligibility. Data were extracted in June 2025 and analyzed separately among those without previous biologic exposure (bionaive patients) and those with previous biologic exposure (bioexperienced patients). Exposures Adalimumab, secukinumab, and ustekinumab among bionaive patients and adalimumab, bimekizumab, brodalumab, guselkumab, ixekizumab, risankizumab, secukinumab, and ustekinumab among bioexperienced patients. Main Outcomes and Measures The main outcome was standardized absolute risks of treatment discontinuation at 1, 2, and 5 years. Kaplan-Meier estimator was used to determine crude drug survival estimates and the Aalen-Johansen estimator was used to determine crude cause-specific absolute risks. Results The study included 4438 unique patients with psoriasis (2717 [61.2%] male; mean [SD] age, 45.0 [14.6] years at the time of their first treatment included in the study), 1039 (23.4%) of whom had comorbid psoriatic arthritis. A total of 3790 treatment series from bionaive patients were analyzed: 2646 were with adalimumab, 377 with secukinumab, and 767 with ustekinumab. The 5-year standardized risk of discontinuing ustekinumab was 0.37 (95% CI, 0.33-0.41), which was significantly lower than the standardized risks for adalimumab (0.51; 95% CI, 0.49-0.54) and secukinumab (0.54; 95% CI, 0.48-0.60). A total of 3403 treatment series from bioexperienced patients were analyzed: 790 were with adalimumab, 376 with bimekizumab, 192 with brodalumab, 218 with guselkumab, 556 with ixekizumab, 78 with risankizumab, 466 with secukinumab, and 727 with ustekinumab. The 2-year standardized absolute risk of discontinuing ustekinumab was 0.39 (95% CI, 0.36-0.43). Only bimekizumab (0.27; 95% CI, 0.20-0.34), guselkumab (0.29; 95% CI, 0.22-0.36), and risankizumab (0.25; 95% CI, 0.15-0.36) were associated with a significantly lower standardized absolute risk of discontinuation compared with ustekinumab. Conclusions and Relevance In this cohort study in Denmark, among bionaive patients with psoriasis, ustekinumab had superior drug survival compared with adalimumab and secukinumab, and among bioexperienced patients with psoriasis, bimekizumab, guselkumab, and risankizumab had superior drug survival. These results offer insight into the performance of different biologics in the treatment of psoriasis in a routine clinical practice setting.