The following is a list of organizations that indicate they provide Drupal training services.

For upcoming Trainings check Events section and Global Training Days.

Drupalize.Me

Drupal Training by Drupalize.Me

Become a member at Drupalize.Me and access professional Drupal training anytime, anywhere. Thousands of users around the world already trust our comprehensive instructional video library.

https://drupalize.me

Lullabot

Lullabot provides private training on a wide range of Drupal topics including site building, theming, development, project management, and content architecture. You can see a list of standard classes we offer on our site , and we also provide custom curriculums, as needed.

In addition to in-person workshops, we also provide a subscription-based Drupal video tutorial website,...

http://www.lullabot.com/services/training