Foundational Questions Institute

The Foundational Questions Institute, styled FQxI (formerly FQXi), is an organization that provides grants to "catalyze, support, and disseminate research on questions at the foundations of physics and cosmology." It was founded in 2005 by cosmologists Max Tegmark and Anthony Aguirre,. It has run multiple worldwide grant competitions (in 2006, 2008, 2010, 2013, 2015, 2017 and 2019), the first of which provided US$2M to 30 projects. It also runs frequent essay contests open to the general public with $40,000 in prizes awarded by a jury panel and the best texts published in book format.

FQxI is an independent, philanthropically funded non-profit organization, run by scientists for scientists.

The $6.2 million seed funding was donated by the John Templeton Foundation, whose goal is to reconcile science and religion. Tegmark has stated that the money came with "no strings attached"; The Boston Globe stated FQxI is run by "two well-respected researchers who say they are not religious. The institute's scientific advisory board is also filled with top scientists." Critics of the John Templeton Foundation such as Sean Carroll have also stated they were satisfied that the FQxI is independent.

Notable members
FQXi members include

Among others
 * Scott Aaronson
 * Anthony Aguirre
 * Yakir Aharonov
 * John Carlos Baez
 * Julian Barbour
 * John D. Barrow
 * Jacob Biamonte
 * Raphael Bousso
 * Sean Carroll
 * David Chalmers
 * Paul Davies
 * David Deutsch
 * George F. R. Ellis
 * Nicolas Gisin
 * Brian Greene
 * Sabine Hossenfelder
 * Robert Lawrence Kuhn
 * Seth Lloyd
 * Roger Penrose
 * Lisa Randall
 * Martin Rees
 * Carlo Rovelli
 * Lee Smolin
 * Leonard Susskind
 * Gerard 't Hooft
 * Max Tegmark
 * Vlatko Vedral
 * Steven Weinberg
 * Frank Wilczek
 * Stephen Wolfram
 * Anton Zeilinger
 * Wojciech Zurek