- Australia
- Australia and New Zealand participated together as Australasia during the 1908 and 1912 Summer Olympics. Australia hosted the 1956 and 2000 Summer Olympics
- Austria
- Austria hosted the 1964 and 1976 Winter Olympics.
- Belgium
- Belgium hosted the 1920 Summer Olympics.
- Brazil
- Brazil hosted the 2016 Summer Olympics.
- Canada
- Canada hosted the 1976 Summer Olympics, as well as the 1988 and 2010 Winter Olympics. Canada did not participate in 1980 due to a boycott.
- China
- China hosted the 2008 Summer Olympics, as well as the 2022 Winter Olympics.
- Finland
- Finland hosted the 1952 Summer Olympics.
- France
- France hosted the 1900, 1924, and 2024 Summer Olympics, as well as the 1924, 1968, and 1992 Winter Olympics.
- Germany
- Germany hosted the 1936 and 1972 Summer Olympics, as well as the 1936 Winter Olympics.
- Great Britain
- Great Britain hosted the 1908, 1948, and 2012 Summer Olympics.
- Greece
- Greece hosted the 1896 and 2004 Summer Olympics.
- Italy
- Italy hosted the 1960 Summer Olympics, as well as the 1956 and 2006 Winter Olympics.
- Japan
- Japan hosted the 1964 and 2020 Summer Olympics, as well as the 1972 and 1998 Winter Olympics. Japan did not participate in 1980 due to a boycott.
- Mexico
- Mexico hosted the 1968 Summer Olympics.
- Netherlands
- The Netherlands hosted the 1928 Summer Olympics.
- New Zealand
- Australia and New Zealand participated together as Australasia during the 1908 and 1912 Summer Olympics.
- Norway
- Norway hosted the 1952 and 1994 Winter Olympics. Norway did not participate in 1980 due to a boycott
- Russia
- Russia hosted the 2014 Winter Olympics. Russia was banned from the 2018 and 2022 Winter Olympics, and the 2020 and 2024 Summer Olympics; individual athletes could participate under the title "Olympic Athlete from Russia" during the 2018 Winter Olympics; "ROC" during the 2020 Summer Olympics and 2022 Winter Olympics; and "Individual Neutral Athletes" at the 2024 Summer Olympics.
- South Korea
- South Korea hosted the 1988 Summer Olympics, as well as the 2018 Winter Olympics. South Korea did not participate in 1980 due to a boycott.
- Soviet Union
- The Soviet Union hosted the 1980 Summer Olympics. The Soviet Union did not participate in 1984 due to a boycott.
- Spain
- Spain hosted the 1992 Summer Olympics.
- Sweden
- Sweden hosted the 1912 Summer Olympics.
- Switzerland
- Switzerland hosted the 1928 and 1948 Winter Olympics.
- United States
- The United States hosted the 1904, 1932, 1984, 1996, and 2028 Summer Olympics, as well as the 1932, 1960, 1980, and 2002 Winter Olympics. The United States did not participate in 1980 due to a boycott.
- Yugoslavia
- Yugoslavia hosted the 1984 Winter Olympics.
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