Background <p>This nationwide study evaluated the research topics, methodological characteristics, institutional distribution, and publication outcomes of geriatric medicine-related internal medicine residency theses in Türkiye between 1998 and 2022.</p> Methods <p>A total of 234 geriatric medicine-related theses registered in the Turkish Higher Education Council Thesis Center were retrospectively analyzed. Data included thesis design, research topic, institution type (university vs. training and research hospital), and publication metrics (publication status, indexing, publication delay, and authors’ current specialties).</p> Results <p>Cross-sectional design was the most common (63.7%). The overall publication rate was 47.4%, with a median publication delay of 2 years (IQR 1–4). Publication rates were higher in university hospitals than in training and research hospitals (51.4% vs. 32.7%, <i>p</i> = 0.002). Methodological theses showed higher publication success (<i>p</i> = 0.019). Publication rates declined from 59.2% in 1998–2014 to 42.3% in 2015–2022 (<i>p</i> = 0.018). Theses authored by future geriatricians had higher publication rates (78.8% vs. 43.3%, <i>p</i> &lt; 0.001). Despite an increase in geriatric syndrome thesis topics, no significant association was found between publication status and thesis categories.</p> Conclusions <p>Geriatric medicine has gained increasing academic visibility in internal medicine training in Türkiye. However, declining publication rates and institutional shifts highlight the need for stronger mentorship and structured research support in residency programs.</p>