 This study uses Landsat-based time series green space mapping and a population-weighted exposure framework to quantify changes in human exposure to urban green space and associated equality for 1028 global cities from 2000 to 2018. Results show that physical green space coverage increased, leading to a reduction in green space exposure inequality over the past two decades. However, the rate of reduction was faster in cities in the global south than in the north. These findings provide insights into the impact of urbanization on urban nature and environmental inequality change and can inform future city greening efforts. This article was authored by Shen Biawu, Bin Chen, Chris Webster, and others.