BGN/PCGN romanization are the systems for romanization and Roman-script spelling conventions adopted by the United States Board on Geographic Names (BGN) and the Permanent Committee on Geographical Names for British Official Use (PCGN).
[2] Romanization systems and spelling conventions for different languages have been gradually introduced over the course of several years.
[3] A complete list of BGN/PCGN systems and agreements covering the following languages is given below (the date of adoption is given in the parentheses).
The status "agreement" refers to systems which were created by authorities of the corresponding nations and then adopted by BGN and PCGN.
In addition to the systems above, BGN/PCGN adopted Roman Script Spelling Conventions for languages that use the Roman alphabet but use letters not present in the English alphabet.