Translation guide
The full formal name of UNESCO. In Japanese, it is almost always referred to by the acronym ユネスコ, with the full name used only in very formal or official contexts.
国際連合教育科学文化機関
United Nations Educational, Scientific and Cultural Organization
Full official name, used in formal documents.
When referring to UNESCO in everyday conversation, news, or writing.
The acronym UNESCO, used as a proper noun. This is the most common and natural way to refer to the organization in Japanese.
ユネスコの世界遺産に登録された。
It was registered as a UNESCO World Heritage site.
ユネスコは教育支援を行っている。
UNESCO provides educational support.
When the full name is required, such as in official documents, treaties, or very formal speeches.
The official Japanese translation of the full name. It is rarely used in everyday language; ユネスコ is preferred.
国際連合教育科学文化機関憲章が採択された。
The Constitution of the United Nations Educational, Scientific and Cultural Organization was adopted.
In almost all situations, use ユネスコ. The full name 国際連合教育科学文化機関 is extremely formal and rarely encountered outside of legal or diplomatic texts.