Join or Renew Your Membership

Welcome to ATOS!

Membership is on an 12-month basis and will start immediately upon joining. The renewal date will be the last day of the month you joined, in the following year. For members outside of the United States, there is a required $15 international postage fee. Gift memberships are available. A gift card will be mailed on your behalf to the recipient.

To join or renew, click below on the desired membership level!*

If you wish to make a donation instead, please visit our Donate On-Line page.

All memberships are listed in U.S. dollars. Credit card transactions will be processed by a US bank.

To join or renew by mail, use this printable form.