Global per capita greenhouse gas emissions 2023, by OECD country

Australia had the highest per capita greenhouse gas emissions of all OECD member countries in 2023, at 22 metric tons of carbon dioxide equivalent (tCO₂e). Canadians were the second-worst carbon polluters that year, with average emissions of just over 20 tCO₂e/cap.13 of the 38 OECD member countries had per capita emissions below the global average in 2023, with Costa Rica, the most recent OECD member, averaging just below four tCO₂e/cap.

在2023年，澳大利亚在所有经合组织成员国中人均温室气体排放量最高，达到每人为22吨二氧化碳当量（tCO₂e）。加拿大当年成为第二大的碳排放国，人均排放量略超过20 tCO₂e/cap。在38个经合组织成员国中，有13个国家的平均人均排放量低于全球平均水平，其中最新加入经合组织的哥斯达黎加的人均排放量平均略低于4 tCO₂e/cap。