Top Lean & SixSigma consulting firms in the US in 2021

What are the top Lean & SixSigma consulting firms in the US? Having analyzed millions of data points from clients and consultants from across the country, meet the top consulting firms specialized in Lean & SixSigma consulting services for the year 2021.

Our Lean & SixSigma consulting firms ranking is based on a range of quantitative and qualitative factors including: recommendation scores from clients, peer reviews from consultants, the breadth and depth of Lean & SixSigma offerings, advisory and implementation expertise in Lean & SixSigma, the track record of consulting projects delivered and the quality of thought leadership.

The top consulting firms for Lean & SixSigma services:

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