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.

Sigma in the news   

Be aware of email scams targeting chapter leaders

As you may have read in Sigma Update, Sigma Headquarters was recently informed of fraudulent emails targeting Sigma chapters and chapter leaders. The perpetrators were sophisticated enough to reference Sigma board members in their messages.

This development is troubling, and Sigma is taking it very seriously. We want you to know these scam messages are blatant, fraudulent efforts intended to steal your money. 

Please consult our handy Sigma Spot the Scams resource to help you protect yourself from and identify suspected scam messages. 

Because the volume of scams seems to be on the increase, we ask you to remain vigilant. 

Thank you.