I'm currently learning the Russian language. While I was in the middle of learning this language and I understood the letters used, I noticed a few cases regarding those letters. One case that got me confused right now is the use of "йа" and "Я". I have seen "Майами" in one article, but it is not spelled "Маями". A similar case goes with "йо" and "Ё". Are there rules regarding those letters?

  • I can't think of any real rules, however йо is very rarely used (e.g. район). Same goes for йа
    – Aleks G
    Commented Apr 4, 2014 at 12:47
  • Note that proper names may have "historical" spelling, like Washington spelled differently when is used as city name (Вашингтон) or a person (Уошингтон). It is not true that you should always use ё/я when hear йо/йа. This online tool gives 64 matches for words containing йа and 348 words for йо (most of them however are foreign proper names like Бейонсе).
    – Artemix
    Commented Apr 4, 2014 at 13:14
  • 1
    I'd feel that the difference is more of a split in syllable pronounciation - Май-ами instead of Ма-йами / Ма-ями; but it seems to differ among speakers/
    – Peteris
    Commented Apr 13, 2014 at 16:31
  • By the way, there is a similar problem with distinguishing э and е in loanwords, see russian.stackexchange.com/questions/335/… for example
    – se0808
    Commented Jul 11, 2015 at 9:07

6 Answers 6


Yes, both йа and йо are used in russian writing. They are used mostly in loaned words.

Йа (and its counterpart ьа) are used when transcribing foreign proper names only:

Брайан, Гайана, Майами, Яньань

Though I have found a neologism грабьармия which is pronounced as "грабь'армия" without я in the middle of the word.

Йо is used in such nouns as

йог, йод, йота, майор, район, йогурт, майонез.

All of them have foreign origin, though some of them have appeared in Russian vocabulary for many years. For instance, йота is a name of a greek letter and is mentioned in phraseologism "Ни на йоту" which has been used for at least 200 years. Many proper nouns (like Майорка) use йо because of transcription rules (see Stepan Stepanov's answer).

However, sometimes йо can be a result of concatenating two words into one single word. Such words (like самолёт) have a structure word1 + о + word2 (самолёт = сам + о + лёт - "сам летает"). If the first word ends on й, the resulting word will have a йо:

стройотряд = строй + отряд - строительный отряд.

Another interesting case of ё being written in some other way is words like:

бульон, почтальон, каньон, лосьон, сеньор, батальон, медальон, павильон, шампиньон

At first glance it may seem that this is a case when ё after consonant softens the preceding consonant and from йо becomes ьо. But in fact that is not the case. Йо is still there, but is not written. In all these words ьо are pronounced as if it is written as ьйо or ьё: бульйон, почтальйон, etc.

So, as a bottom line, Russian language has no "write as you hear" concept. Though the orthography rules exist, they have many exceptions.


There are plenty of such words; your Майами, or Айова, are examples. However, I am not aware of any words of Slavic origin containing йа or йо; rather, they are loanwords, whether new or old-established. Here, the spelling tends to reflect the spelling of the original as closely as is possible for the different writing systems.


Actually you may see both variants of writing: Майами and Маями. Майами - is official name, however, some people may also use Маями. It's just a problems of transliteration names from one language to another.

There is no special rules about transliteration names. For example, in common Miami is used to write like Майами. However, Myanmar is used to write like Мьянма, with using я.

If we are talking about common words, like йогурт or майор or ёж and so on, there is no difference in the sound of йо and ё or йа and я. The reason why whe use one or another - is a traditional writing. For foreign words we usually use йа and йо. For russian words я and ё. But it's not a strong rule. You should just remember how to write one or another word. Like in english you will write photo and not foto, even if it's sounds the same.

As addition: Russians never use йу only ю. Mystery.

  • There are rules, though depending on the native language (Myanmar is from Burmese, probably via some European language, so follows the rules different from when borrowing American proper names; and photo is evidently written with ph taking into consideration that it has Greek roots) and the time of loaning (like доктор Ватсон but Эмма Уотсон). Whether they are useful is a question though.
    – se0808
    Commented Jul 11, 2015 at 8:57
  • By the way, did you see Маями not as a Asian name but as the name of the city? I dare to doubt it.
    – se0808
    Commented Jul 11, 2015 at 9:01

The sequences йа and йо are used exclusively in loan words. The reason is unknown to me, but for йо I could hypotesize that it is used so to not be confused with е where the dots over ё are omitted. Another idea is that possibly somebody tried to reflect etymology this way.

Personally I would prefer always use я and ё if I could influence the usage.


I think there is no difference in pronunciation. E.g. i pronounce this sound in "Майами" identical to "Маяк". But from other hand i can pronounce Й a bit harder and longer in case of йа.

It is also true, that these combination usually appear in foreign names or geographical names.

I think I've goggled the reason - Англо-русская практическая транскрипция . I don't find ё there. Я is mentioned, but some strange way. So they are not supposed to be used.

But, interesting fact, "Я" and also some strange way "ЙА" are both used for Spanish names Испанско-русская практическая транскрипция

I can suppose, why they avoid to use ё. I don't know why but very often "ё" is written as "e" but still read as "ё". For example nobody will read "Елка" as it looks, everyone understands its "Ёлка" and reads it properly. Probably this confusion makes letter ё to be unwanted in foreign words, because nobody knows how to read it properly in advance.


Be careful, you can find this use йа, йо, йу in the slang forms! At the same time all the "right" forms are listed in the ansveres above: Йод, Нью-Йорк, йогурт, йога, майор, майонез..., it is also may be a "spelled" form of "yo!" - йоу!, all other forms are slang and they are very popular on the forums and communities: йож, йад, йа.

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