六式碼學會 (SSI) 是一個非營利專業機構。 其主要目標是審核及認證精益和六式碼專業人士，在該應用科學方面具有公認的知識和技能。 學會提供一站式服務，由公開課程、考試、專業註冊、公司內部培訓等服務，致力推動精益六式碼應用普及性及專業資歷認受。

SSI 是第一家提供關於六式碼、精益和 制約理論的公開培訓、個人和企業認證的領先機構。 為促進 Six Sigma 方法的應用，SSI 還與大學、學院和專業團體密切合作，組織 Six Sigma 課程或活動，並協助許多公共和私人機構進行內部培訓。

The Six Sigma Institute (SSI) is a non-profit making professional body. Its primary objective is to accredit Lean and Six Sigma professionals with recognized knowledge and skills in this application science. The insitute provides one-stop-shop services, including public course, examination, professional registration and in-house training...etc, delicated to promote Lean & Six Sigma implementation and professional recognition.

SSI is the first and leading institution offer public training, personal and corperate accreditation on Six Sigma, Lean and Theory of Constraint (TOC). To promote the application of Six Sigma methodologies, the SSI also work closely with universities, colleges and professional bodies in organizing Six Sigma courses or events and assists a number of public and private institutions having in-house training.

Website: www.ssi.org.hk