Permission to Use Sigma Logo

If you are an Sigma member, go to The Circle to download the chapter style guide and a JPEG file of the Sigma logo. If you would like a vector image of the logo or crest, complete the form included in the style guide and your request will be reviewed as soon as possible.

If you are not an Sigma member and would like to request use of Sigma's official logo, contact In your email, provide detailed information regarding your intended use. Permission to use the logo or crest is granted on a case-by-case basis, and reasonable notice should be given. Approvals are for one-time use only.

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Important Update: Learning Management System Upgrade on 15 March

Sigma is transitioning to a new learning management system for our online courses on 15 March, and users will experience intermittent downtime as we move all data over to this new system. If you're in the middle of taking a course, please complete your progress by 14 March. Sigma will help you along the way! Learn more about the transition.