  The first generation metal-free stars, referred to as population III (Pop
III) stars, are believed to be the first objects to form out of the pristine
gas in the very early Universe. Pop III stars have different structures from
current generation of stars and are important for generating heavy elements and
shaping subsequent star formation. However, it is very challenging to directly
detect Pop III stars given their high redshifts and short life-times. In this
paper, we propose a novel method for detecting Pop III stars through their
tidal disruption events (TDEs) by massive black holes. We model the emission
properties and calculate the expected rates for these unique TDEs in the early
Universe at z ~ 10. We find that Pop III star TDEs have much higher mass
fallback rates and longer evolution timescales compared to solar-type star TDEs
in the local universe, which enhances the feasibility of their detection,
although a good survey strategy will be needed for categorizing these sources
as transients. We further demonstrate that a large fraction of the flare
emissions are redshifted to infrared wavelengths, which can be detected by the
James Webb Space Telescope and the Nancy Grace Roman Space Telescope. Last but
not least, we find a promising Pop III star TDE detection rate of up to a few
tens per year using the Nancy Grace Roman Space Telescope, based on our current
understanding of the black hole mass function in the early Universe.
