pbosakov

This plugin will automatically transliterate permalink URLs when you save a new page or post with a title in the Cyrillic script. 
Romanization presets are available for all the major languages using the Cyrillic script: Russian, Ukrainian, Kazakh, Belarussian, Serbian, Tajik, Bulgarian, Kyrgyz, Bosnian, Mongolian, and Macedonian. 
The plugin can also romanize permalinks for any pre-existing posts, categories, products or other items with a title written in Cyrillic. 
Only UTF-8 encoding is supported.

Cyrillic Permalinks

Automatically transliterates Cyrillic letters in permalinks to their Latin phonetic equivalent. Multi-language. Can convert pre-existing permalinks.

Sergey Biryukov

webvitaly

karevn

BArS

Converts Ukrainian characters in post, page and term slugs to Latin characters. Useful for creating human-readable URLs.
<h4>Features</h4>
<ul>
<li>Automatically converts existing post, page and term slugs on activation</li>
<li>Saves existing post and page permalinks integrity</li>
<li>Performs transliteration of attachment file names</li>
<li>Includes just Ukrainian characters</li>
<li>Transliteration table can be customized without editing the plugin itself</li>
</ul>
Transliteration based on http://ukrlit.org/transliteratsiia
Based on the original Rus-To-Lat plugin by Anton Skorobogatov and Cyr-To-Lat by SergeyBiryukov, karevn, webvitaly.

Ukr-To-Lat

Converts Ukrainian characters in post, page and term slugs to Latin characters.

Cyrillic Permalinks vs Ukr-To-Lat