The Houston Orchid Society Inc. (HOS) is a non-profit organization representing a group of people who share a fascination with orchids. The HOS was organized November 15, 1945 and has the distinction of being the second society in the United States to affiliate with the American Orchid Society (AOS) on December 23, 1946.

The HOS was granted the Distinguished Affiliated Society Service Award at the AOS Members Meetings in Houston in October 2002. They wrote: 

This society has a long history of service to the AOS and the orchid growing community. Founded in 1945, its members have worked to educate the public, and specialist orchid growers by hosting annual orchid workshops and frequent public shows. The society has supported the Houston Judging Center and has been the source of many excellent volunteer leaders and committee workers for the AOS. Its members are to be congratulated on their great contributions to the enjoyment of orchids. The DASSA award is presented annually to an Affiliated Society(s) in recognition of sustained, outstanding contributions in areas of service and support in the field of orchidology.
 

    

The HOS is a member society of the Southwest Regional Orchid Growers Association (SWROGA;www.swroga.org), and is affiliated with the Orchid Digest Corporation (ODC), and the International Phalaenopsis Alliance (IPA).

The HOS is recognized as a tax-exempt organization under Section 501(c)(3) of the Internal Revenue Service code. Contributions to the HOS (and the affiliated Houston Judging Center) are tax-deductible.