Moodle offers the official Moodle Educator Certification —MEC—, an internationally recognized diploma and badge for experienced Moodle educators.
The MEC is only available through Certified Moodle Partners. The eLearning Success Summit has a partnership with Eummena, Moodle Partner in the Middle East, for the MEC. They offer it in English and other languages.
You can also lookup a Moodle Partner that offers MEC in your country.
I hope this helps!