Count: 0 — No sovereign Asian country name begins with the letter X. This list therefore contains no entries under X. Note the interesting detail that X appears frequently in romanized Chinese place names (for example, Xīnjiāng and Xīzàng) and in some local alphabets, but those names represent regions, cities, or local spellings rather than independent, widely recognized countries.

Consult authoritative rosters such as the United Nations member-state list, the CIA World Factbook, and the World Bank country classifications to confirm this absence. Remember that the way country names appear in English depends on historical exonyms and standard romanization systems. The letter X is rare as an initial in English exonyms for Asian states because many Asian languages do not use X at the beginning of native names, and transliteration conventions often render those initial sounds with other letters in English.

Consider items that come close but do not meet the criteria. Xīnjiāng and Xīzàng are major Chinese regions, not sovereign states. Hong Kong appears as Xiānggǎng in pinyin but is listed internationally as Hong Kong, China. Azerbaijani and some Turkic languages use the letter X in local orthography (e.g., Azərbaycan), but their English names begin with different letters. For a practical next step, consult the complete A–Z country list from the UN or CIA World Factbook to find neighboring letters (W, Y, Z) and their full entries with capitals, populations, and official languages.