Meritphase) - Quality is a broad segment across all domains, sectors or businesses worldwide. There are Quality certification available for respective fields.
Most common Quality concept that is followed in multiple businesses/domains is Six-Sigma and Lean or Lean Six-Sigma. Lean Six Sigma is an improvised version that derives useful techniques from Six-Sigma and Lean Management practices.
Apart from above, ISO standards are opted by multiple domains. For Information Technology, ASQ is other certification authority. They provide CQI, CQPA, CQT, CRE, CQSE, CSQP, CQE, CQA, CQIA, CMQ/OE etc.
ISO have multiple sets of Quality Parameters for respective line of business and operations. Total Quantity Management (TQM) is famous too. And in some domains MBNQA are accepted.
There are few more certification but they are mostly limited to smaller range of domains. Amd few others are not really used in larger scale so mentioning those names would barely add any value here.
Forgive me if I have used a lot of abbreviations for certification names; but I know it for sure that one can search these in Google and get answers.
Hope you can find one that suits your field of expertise.
Best of Luck!
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