During the Parade of Nations portion of the 1984 Summer Olympics opening ceremony, athletes from each country participating in the Olympics paraded in the arena, preceded by their flag. The flag was borne by a sportsperson from that country chosen either by the National Olympic Committee or by the athletes themselves to represent their country.
As the nation of the first modern Olympic Games, Greece entered the stadium first; whereas, the host nation of the United States marched last. Other countries entered in alphabetical order in the language of the host country (English), according with tradition and IOC guidelines.
Whilst most countries entered under their short names, a few entered under more formal or alternative names, mostly due to political and naming disputes. The Republic of China (commonly known as Taiwan) entered with the compromised name and flag of "Chinese Taipei" under T so that they did not enter together with conflicting People's Republic of China (commonly known as China), which entered as the "People's Republic of China" under C.
A record of 140 nations entered the stadium with a combined total of 7,078 athletes. Eighteen nations made their Olympic debut, namely Bahrain, Bangladesh, Bhutan, British Virgin Islands, Djibouti, Equatorial Guinea, Gambia, Grenada, Mauritania, Mauritius, North Yemen, Oman, Qatar, Rwanda, Samoa, Solomon Islands, Tonga, and the United Arab Emirates. The People's Republic of China made its first appearance at the Summer Olympics since 1952, while the Republic of China participated for the first time under the name Chinese Taipei as a result of the IOC agreement. Thirteen countries, namely Afghanistan, Angola, Bulgaria, Cuba, Czechoslovakia, Ethiopia, German Democratic Republic, Hungary, Laos, Mongolia, Democratic People's Republic of Korea, Poland, and Vietnam, joined the Soviet Union on a boycott of these Games, in retaliation for the U.S.-led boycott of the 1980 Summer Olympics in Moscow. Apart from the People's Republic of China, Romania and Yugoslavia were among the Socialist countries to disregard the boycott and attend the Games. Iran and Libya did not also compete the Games, citing political reasons.