The International Dark-Sky Association, Inc. (or IDA, Inc.) is a new tax-exempt, non-profit corporation formed to serve the public and the amateur and professional astronomer communities by providing information, education, and research on light pollution and related topics. IDA will share knowledge of the issue on a local, national, and international basis and will assist with members’ problems. It was organized for the purpose of preserving dark skies for astronomy and for the general public. Solutions to the problem of light pollution will, at the same time, also promote maximum effectiveness for all outdoor lighting and will conserve natural resources.