There are many systems for romanising Russian. Most of them use kh for х (including those used by US/UK for Russian place names, names in Russian passports, ro

There are many systems for romanising Russian. Most of them use kh for х (including those used by US/UK for Russian place names, names in Russian passports, road signs in Russia). Wikipedia has a handy table: https://en.wikipedia.org/wiki/Romanization_of_Russian#Transliteration_table https://en.wikipedia.org/wiki/Romanization_of_Russian#Transl... As to why it is that way, I don't know. Some closely related languages (Belarusian, Bulgarian) follow different conventions. For example, the national system in Belarus transliterates х as ch and г as h.