Cultivating Our Sisterhood International Association, Inc. (COSIA) is a 501(c)(3) nonprofit whose mission is to cultivate a sense of sisterhood among women and to enhance the lives of those whom they support. At COSIA, we develop supportive networks that are not limited by age, ethnicity, sexual orientation, or religion; utilize these networks as resources to produce affordable events and programs that promote team-building and the pursuit of personal and professional life goals and objectives; and support through fundraising and volunteer activities socially conscious initiatives and programs that benefit girls and women from underserved communities.

COSIA offers a complimentary membership program* for any eligible woman, age 18 or older, interested in furthering the purposes for which COSIA was formed, regardless of race, ethnicity, gender, nationality, sexual orientation, religion, physical ability, age, or socioeconomic status.

Complimentary memberships are valid for one year and may be renewed if the cardholder is an active member of a COSIA committee. This must be verified by the committee chair. Members support the work and mission of COSIA through committee service, financial gifts and pledges. If you are a woman, age 18 or older, who is willing to share your resources, gifts and talents with us for worthy causes, join COSIA today.

*Complimentary members may serve on COSIA committees, but do not have voting rights and are not eligible to serve on the COSIA Board of Directors. Complimentary members also do not enjoy discounts, special offers, and other benefits of COSIA membership as outlined in the COSIA Governance Manual, and do not have access to the members' only discussion list, or the membership directory networking guide.


*All COSIA memberships are nonrefundable and nontransferable. This does not exclude gifting a membership to an eligible woman at the time of purchase. All voting membership categories are limited to residents in North America. For international membership options and other important information, visit the membership benefits and guidelines page. Membership cards may be replaced when eligible members send a written request to COSIA along with a replacement fee of $5. Please e-mail info (at) cosia (dot) net for more information.