This replication package contains the cleaned OECD country-year panel dataset, R code, model outputs, editable tables, and figures used for the study “Carbon Pricing and Per-Capita Greenhouse Gas Emissions in OECD Countries: Evidence from a Fixed-Effects Panel.” The analysis examines whether stronger carbon-pricing signals are associated with lower per-capita greenhouse gas emissions in OECD countries over the period 2015–2023. The package includes the cleaned analysis dataset, the combined source workbook, an R script that reproduces all main tables, appendix tables, figures, and regression models, as well as R session information for reproducibility. The underlying data are derived from publicly available OECD, World Bank, and Climate Watch sources. The main carbon-pricing variable should be interpreted as a country-year carbon-pricing signal rather than as a comprehensive effective carbon rate.