Intertel is a high-IQ society founded in 1966 that is open to those who have scored at or above the 99th percentile, or the top one percent, on a standardized test of intelligence.

It has been identified as one of the notable high-IQ societies established since the late 1960s with admissions requirements that are stricter and more exclusive than Mensa.

[1] It has been identified as one of the notable high-IQ societies established since the late 1960s with admissions requirements that are stricter and more exclusive than Mensa.

[2][3] Intertel was founded in 1966 by Ralph Haines, following the example of Mensa founders Roland Berrill and Lancelot Ware, who wanted to create an association adapted to the gifted needs without any specific restriction of admission (with the exception of a minimum IQ).

[4][5] Aligned with one of the goals stated in its constitution, Intertel's members participate in research on high intelligence.