NPA Joint Membership

National Postdoctoral Association Joint Membership

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Sigma Xi has partnered with the National Postdoctoral Association (NPA) to provide postdocs and graduate students a special joint membership opportunity at a twenty percent discount. 

Joint membership is available to new members when elected to Sigma Xi membership and concurrently join NPA.

This partnership enables postdocs and graduate students to benefit from the opportunities available through both Sigma Xi and the NPA at a discounted rate. Based on qualifications, graduate students and postdocs may be elected to associate or full membership in Sigma Xi. 

Sigma Xi - NPA Joint Membership Rates 

Dues Category  Annual Dues Rate*
 Graduate Students  $68.00 
 Postdocs (for up to three years after graduation)   $80.00
 Postdocs (more than three years after graduation)  $136.00
 * An additional $20.00 will be added for one-time Sigma Xi Membership initiation fees

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If you have any questions, please contact us by sending an email to or by calling 1-800-243-6534.