# 2006

- [Oliver Wyman](https://www.hidden-champions-of-consulting.de/en/champion/mercer-oliver-wyman.md)
- [TellSell](https://www.hidden-champions-of-consulting.de/en/champion/tellsell-consulting.md)
- [goetzpartners](https://www.hidden-champions-of-consulting.de/en/champion/goetzpartners.md)
- [Barkawi](https://www.hidden-champions-of-consulting.de/en/champion/barkawi-management-consultants.md)
- [Kurt Salmon](https://www.hidden-champions-of-consulting.de/en/champion/kurt-salmon-associates.md)
- [Stern Stewart & Co.](https://www.hidden-champions-of-consulting.de/en/champion/stern-stewart-co.md)
- [Horváth](https://www.hidden-champions-of-consulting.de/en/champion/horvath-partners.md)
- [Management Engineers](https://www.hidden-champions-of-consulting.de/en/champion/management-engineers.md)
- [DiamondCluster](https://www.hidden-champions-of-consulting.de/en/champion/diamondcluster.md)
- [Oliver Wyman](https://www.hidden-champions-of-consulting.de/en/champion/oliver-wyman.md)
- [PwC](https://www.hidden-champions-of-consulting.de/en/champion/pwc.md)