The Forward Physics Facility (FPF) is a proposed new underground cavern at the Large Hadron Collider (LHC) that will host a suite of new experiments during the High-Luminosity LHC (HL-LHC) era.  The existing large LHC detectors have un-instrumented regions along the beam line, and so miss the rich physics opportunities provided by the enormous flux of particles produced in the far-forward direction.  Without the FPF, the HL-LHC will be blind to neutrinos and many proposed new particles.  With the FPF, a diverse suite of experiments will detect millions of neutrinos at the highest energies ever seen from a human source and probe a wide range of new physics theories.  The FPF will thereby expand our understanding of neutrino properties, probe proton and nuclear structure and the strong interactions in new regimes, clarify astroparticle data, and carry out world-leading searches for light dark matter, dark sectors, new forces, and many other new particles.

The FPF is supported by the CERN Physics Beyond Collider (PBC) group.