- Bigfoot Field Researchers Organization
 - Probing the Bigfoot and Sasquatch mystery by leading public expeditions in search of the elusive biped as well as providing maps, a sighting database for North America, and footage of the mysterious ape like creature. - Texas Bigfoot Research Center
- Research group investigating Bigfoot sighting reports in Texas, New Mexico, Oklahoma, Arkansas, and Louisiana.
- Gulf Coast BigFoot Research Organization
- Review or submit reports of Bigfoot activity worldwide, and review findings of investigations of the Bigfoot phenomena in the Southern United States.
- Sasquatch Information Society
- Incudes a Bigfoot sighting database, a news wire, interviews with Bigfoot researchers, and photographs of mysterious man/beast creatures.
- International Bigfoot Society
- Features a newsletter and a collection of news articles and Bigfoot sighting reports.
- Washington State Sasquatch Page
- Receives and posts Sasquatch sightings and information.
- Sasquatch Research Initiative (SRI)
- Independent investigators and enthusiasts that share the common goal of gathering enough information to help solve one of the greatest mysteries of the North American outdoors.
- Ohio Bigfoot Reseach and Study Group (OBRSG)
- Organisation dedicated to the study of Sasquatch.
- Bigfoot Discovery Project
- Group working to facilitate the discovery of Bigfoot by sharing information, and attempting to "flesh out" the hairy bipeds' natural history. Also offers information on visiting the Bigfoot Discovery Museum in Felton, CA.
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