Background: Climate change, with its diverse and far-reaching impacts, poses unique challenges to maternal well-being and increases the prevalence of complications during pregnancy and childbirth globally. This evidence gap map (EGM) aims to identify gaps in knowledge and areas where further research is required related to climate change and its impact on mothers globally.

Methods: In this EGM, we integrated 133 studies including qualitative, and quantitative studies, reviews, and grey literature that examined the dynamic connection between climate change and maternal health. We used Covidence for the screening of studies, and Eppi reviewer/Eppi Mapper software, to generate the EGM which facilitated a systematic and logical representation of the exposure of climate change events and their correlated maternal outcomes. The protocol for our study was registered in INPLASY # INPLASY202370085.

Results: The results of this EGM showed an increase in the number of studies from 2010 to 2023, revealing a growing recognition of climate-related impacts on mothers. Regional distribution showed concentrated research in North America (51 studies) and Asia (40 studies), with fewer studies in Africa and the Caribbean, indicating varied research emphasis across regions.
Notably, extreme heat emerged as a significant factor affecting maternal health. The predominant indicators related to climate change's impact on mothers included preterm stillbirth and maternal mortality.

Conclusion: The EGM highlights a crucial link between climate change and maternal health. It signals a call to action, emphasizing the need for proactive measures to comprehend and address these implications for the well-being of mothers globally.

Keywords: climate change, climate events, maternal health, global health, evidence gap map