This is a list of every country in the world that has participated at least once in an Olympic event. Note that some countries listed no longer exist, such as the Soviet Union or Bohemia; the countries replacing them are also included. The letter S on the right of the name denotes a participation in the Summer Olympics; a W denotes a participation in the Winter Olympics. A B C D * Denmark S W * Djibouti S * Dominica S * Dominican Republic S E * Ecuador S * Egypt S * El Salvador S * Equatoria Guinea S * Eritrea S * Estonia S W * Ethiopia S W F G H I J K L M N O * Oman S P