HITEMP is the molecular spectroscopic database analogous to HITRAN for high-temperature modeling of the spectra of molecules in the gas phase. HITEMP encompasses many more bands and transitions than HITRAN for eight absorbers: HO, CO, NO, CO, CH, NO, NO and OH. Due to the extremely large number of transitions required for high-temperature simulations, it was necessary to provide the HITEMP data as separate files to that of HITRAN. The HITEMP line lists retain the same 160-character format that was used for earlier editions of HITRAN. There are numerous applications for HITEMP data, some examples include the thermometry of high-temperature environments, analysis of combustion processes, and modeling spectra of atmospheres in the Solar System, exoplanets, brown dwarfs, and stars.