While, ZackCrouser, R. JordanSarvghad, AliAigner, WolfgangArchambault, DanielBujack, Roxana2024-05-212024-05-2120241467-8659https://doi.org/10.1111/cgf.15101https://diglib.eg.org/handle/10.1111/cgf15101Despite the explosive growth of the aging population worldwide, older adults have been largely overlooked by visualization research. This paper is a critical reflection on the underrepresentation of older adults in visualization research. We discuss why investigating visualization at the intersection of aging matters, why older adults may have been omitted from sample populations in visualization research, how aging may affect visualization use, and how this differs from traditional accessibility research. To encourage further discussion and novel scholarship in this area, we introduce GerontoVis, a term which encapsulates research and practice of data visualization design that primarily focuses on older adults. By introducing this new subfield of visualization research, we hope to shine a spotlight on this growing user population and stimulate innovation toward the development of aging-aware visualization tools. We offer a birds-eye view of the GerontoVis landscape, explore some of its unique challenges, and identify promising areas for future research.CCS Concepts: Human-centered computing → HCI design and evaluation methods; User centered design; Visualization design and evaluation methods; Social and professional topics → SeniorsHuman centered computing → HCI design and evaluation methodsUser centered designVisualization design and evaluation methodsSocial and professional topics → Seniors10.1111/cgf.1510114 pages