Wikipedia:Naming conventions (Armenian)

Different transliteration systems exist. They are detailed in Romanization of Armenian. For example, the name of the ex-President of the Republic of Armenia, Ռոբերտ Քոչարյան, can be transliterated either Ṙobert K’očaryan using ISO 9985, or R¯obert K῾oč῾aryan using Hübschmann-Meillet's system, or Rrobert K’och’aryan using BGN/PCGN romanization, and so on.

Those transliteration systems are not commonly used in publications, newspapers, encyclopedias; each source uses its own transcription method. There is no official system. The same example as above is transcribed Robert Kocharian in the website of the presidency, but often Robert Kocharyan in the website of the government.

The system presented here is close to the common English spelling. It's based on BGN/PCGN with one exception: ը is rendered by ë and not by y which renders the consonant յ only. This system can be used in every page involving a transcribed Armenian sentence or text. But a simplified version can be used for the transcription of common or proper names or article titles. For example, Մեր Հայրենիք will be transcribed Mer Hayrenik in the article's title and Mer Hayrenik’ in the text of the song itself.

For Modern Armenian, the preferred standard is ISO 9985:

In linguistic literature on Classical Armenian, the commonly used transliteration is that of Hübschmann-Meillet (1913):

(note the differing conventions marked in boldface)

Note: all the examples below are given personal names.

...
Wikipedia