This repository contains the supplementary materials for the systematic review and meta-analysis on the uses of the Montreal Cognitive Assessment (MoCA) in the Spanish population (PROSPERO ID: CRD420250655570). It includes the raw data and the R script used to perform the meta-analysis and meta-regressions, as well as a comprehensive dataset of the articles included in the review. The variables recorded encompass study references, MoCA versions, cut-off scores, and results, alongside sample characteristics, diagnostic criteria, regional data, and experimental designs. Furthermore, the dataset accounts for demographic factors, psychometric properties, statistical analyses, and other complementary tools used in the primary studies.