There are lots of training institutes and consultants who provide the certifications on completion of their course. Some of the famous certifications are from  ASQ, IEE, BMG, and Benchmark Six Sigma.

ASQ : The American Society for Quality (ASQ) is one of the primary professional organization who provides Six Sigma Certifications. It is most widely recognized internationally and best known for their level of professional certifications. They are offering  two courses –  Green Belts certification and Black Belt certification. Soon they will offer  Certified Six Sigma Master Black Belt in the future. They have huge collection of resources including articles, books etc.

In India, Federation of Indian Chambers of Commerce and Industry (FICCI) has a tie-up with ASQ.

IEE : The Institute of industrial engineers is the leading provider of the cutting edge eduction and is recognized internationally. The certificate programs are available as corporate training program which can be customized as per the company focus. They offer wide range of courses including Lean Six Sigma Green Belt, Six Sigma Black Belt , Six Sigma Green Belt Certificate.

BMG : Breakthrough Management Group specializes in Lean, Six Sigma, Process Management and innovation and is leading provider of consulting and training to provide excellence in performance. It provides over 35 courses in the areas of performance excellence such as Lean, Six Sigma etc.

Benchmark Six Sigma is one of the leading provider of certification and training offering business excellence knowledge across industries. They offer  Six Sigma Champion training, Master Black Belt Certification, Black Belt Certification and Green Belt Certification.

International Quality Federation (IQF) is renowned professional organization that offers an certification  exam in Six Sigma.

Usually Six Sigma black belt certification needs 3+ years of work experience along with two completed projects and  Green Belt certification requires 3 years of work experience.