LessWrong in Russian has it's own website. at lesswrong.ru ([https://translate.google.co.uk/translate?sl=auto&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Flesswrong.ru%2F&edit-text=&act=url google translated into English)
It also has it's own Slack at http://slack.lesswrong.ru/
There are a couple of regular [Less_Wrong_meetup_groups#Moscow.2C_Russia|Russian meetup groups].