  This topical report of the 2021 US Community Study on the Future of Particle
Physics (Snowmass 2021) summarizes the underground facilities needs for
upcoming and next generation neutrino experiments. The underground facilities
needs are discussed in the context of two broad categories: accelerator
neutrinos, in particular with respect to the Deep Underground Neutrino
Experiment (DUNE); and non-accelerator neutrinos, focusing on neutrinos from
natural sources and on searches for neutrinoless double-beta decay.
