  VERITAS, an array of atmospheric-Cherenkov telescopes sensitive to gamma rays
in the very-high-energy range (VHE, E > 100 GeV), carries out an extensive
multimessenger program focused on the search for electromagnetic counterparts
to high-energy neutrinos and gravitational waves. As both neutrinos and gamma
rays are expected to be produced in hadronic interactions near cosmic ray
accelerators, the detection of a gamma-ray source in temporal and spatial
coincidence with the arrival of astrophysical neutrinos could reveal cosmic ray
sources and provide insights into their properties. The detection of
gravitational waves by LIGO in coincidence with a gamma-ray burst has opened
exciting possibilities for the study of these powerful transients. The
detection of VHE gamma rays from these sources would not only help in
pinpointing an electromagnetic counterpart to the gravitational-wave event, but
also enable the study of the relativistic shocks responsible for the
high-energy emission. This talk will present an overview of the VERITAS
multimessenger program, highlighting recent results from the search of VHE
gamma-ray sources associated with neutrino and gravitational-wave events and
discuss future plans for these studies.

High Energy Astrophysical Phenomena