Affiliated fairs are members of the Society for Science network. These competitions exist in nearly every state in the United States as well as over 70 other countries, regions and territories. Fairs are conducted at local, regional, state and national levels and can be affiliated with the International Science and Engineering Fair (ISEF) and/or the Thermo Fisher Scientific Junior Innovators Challenge. To compete at ISEF, a 9th-12th grade student must first win the honor through participation at a Society-affiliated fair. Each affiliated fair has a designated number of projects (individual or team) that they may support to come to ISEF.

Fairs affiliated with the Society for the Thermo Fisher Scientific Junior Innovators Challenge are eligible to name the top 10% of their 6th - 8th grade participants as Thermo Fisher Scientific Junior Innovators Challenge nominees.

Search for your nearest affiliated fair using the fields below. Find-a-Fair is updated as fairs complete the annual affiliation process each fall. 2024/2025 fairs will be posted on or around October 20, 2024. If you do not find an affiliated fair in the fall months, please check back again soon as it is possible your fair has not yet completed affiliation. Fairs will continue to affiliate and appear on this page through Decemeber 31, 2024. If you have questions, you can reach out to us at ISEF@societyforscience.org (for high school fairs affiliated with ISEF) or jic@societyforscience.org (for middle school fairs affiliated with Thermo Fisher JIC).

Most science fairs in the U.S. and U.S. territories are held from January through March. Fairs outside the U.S. may take place at other times of the year. Students who participate in these fairs must observe the International Rules for Pre-college Science Research.