This scoping review mapped evidence on associations between geomagnetic activity/space weather and cardiovascular events, identifying 36 eligible studies from 1964–2023. Most studies reported correlations between geomagnetic/space-weather exposures and increased myocardial infarction, stroke, acute coronary syndrome, or cardiovascular mortality, but the review emphasizes inconsistency and that much of the evidence is ecological with limited confounding control. The authors call for standardized prospective research to clarify mechanisms and potential public-health utility of space-weather monitoring.