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Simple Summary: There is a significant gap in research and guidelines for treating octogenarian multiple myeloma (MM) patients. This retrospective study examined 101 MM patients, median age 84 years (80–98), treated outside clinical studies at TASMC between 2010 and 2023, aiming to review real-world practices and outcomes experienced by this vulnerable group of patients. Of these patients, 87% received a bortezomib-based regimen; 20% received lenalidomide ± bortezomib; 44% were treated with novel agent-based doublets, and 51% with triplets/quadruplets. Despite the employment of reduced doses of steroids and lenalidomide, treatment-related toxicity was high, including 9% who suffered grade 5 events. Of these patients, 67% received subsequent lines, resulting in an impressive median overall survival of 42 months (1–141) in the entire cohort. These results highlight the effectiveness of personalized therapy for octogenarian multiple myeloma (MM) patients and emphasize the need for further real-time studies to establish guidelines for the management of this vulnerable and growing population. Background: Data on the outcome of octogenarian multiple myeloma (MM) patients (pts), especially if treated outside clinical studies, are scanty. Aims and Methods: MM pts ≥ 80 years, treated at TASMC with first-line therapy between 2010 and 2023, were reviewed. Characteristics and outcomes were analyzed. Results: A total number of 101 pts, of whom 54 were males with a median age of 84 years (80–98), were included. Among them, 67.4% had a Charlson comorbidity index of ≥5, 37% had ISS-3 (International staging system) and 20% had Revised-ISS-3. In our study, 44.5% received doublets and 50.5% received triplets/quadruplets. A bortezomib-based regimen was applied in 87%, and IMiDs were used in 27.7%. Despite an upfront employment of a low lenalidomide dose, dose reductions were required in 48%. Grade ≥ 3 adverse events (AEs) (mainly infections) were documented in 36.6% of patients, including grade 5 events in 9%, all attributed to infections. The overall response rate was 69%, including 31% ≥ VGPRs (Very good partial response). Sixty-seven percent (67%) received second-line therapy, administered within a median period of 12 months (1–84). Within a median follow-up period of 36 m (1–141), the median overall survival (OS) approached 42 m (range: 1–141); being shorter in pts > 84 years (HR = 1.7, p = 0.03), pts with lung disease (HR = 1.8, p = 0.044) and pts with ISS = 3 and R-ISS = 3 (HR = 1.65, p = 0.0016 and HR = 2.45, p = 0.006, respectively); Conclusions: Octogenarians treated outside clinical studies often have a lower tolerance to treatment. Nevertheless, upfront administration of low doses of anti-MM agents provided a response in the majority of patients, translated into impressive OS. Nevertheless, mortality due to AEs was high, emphasizing the need for new, "octogenarian-oriented" treatment protocols. [ABSTRACT FROM AUTHOR]