The list of current translators can be seen at the relevant language section here
If you want to translate for one language not
listed there please apply here
and not only state for which language you want to do the task, but also some additional information (something short about you, if you do this in an community effort with a foreign support site, your envisioned target for starting or finishing the translation, etc.). Mostly those being able to express themselves properly are more likely to be chosen if there is more than one accounting for the task.
will be your primary contact within the team regarding translations.
I would like to thank everyone doing these translations as well as everyone wanting to take this very time consuming task. You guys are actively helping in the success of phpBB by your commitment. A big thanks.