Summary This study conducted a bibliometric analysis using the Web of Science Core Collection (WOSCC) to explore the relationship between diabetes mellitus and bariatric surgery (BS) from January 1985 to August 2023. No publications were found between 1985 and 1998. However, from 1998 to 2023, a total of 9,496 English articles were identified, accumulating 291,289 citations (241,563 excluding self‐citations) and achieving an H‐Index of 197. Leading contributors to the field were the United States, China, and Italy. Noteworthy authors in this area of research included Philip R. Schauer, Wei‐Jei Lee, and Carel W. le Roux. The major journals that featured this research were ‘Obesity Surgery,’ ‘Diabetes Care,’ and ‘Surgery for Obesity and Related Diseases.’ The most highly cited article focused on lifestyle, diabetes, and cardiovascular risks 10 years after BS, emphasizing the significant attention given to the nutritional, cardiac, and general internal medicine impacts of diabetes and BS. The increase in research output during the review period indicates a growing interest in the relationship between diabetes and BS, providing a valuable reference for future studies in this evolving field.