The Tiberius pipeline, written in Python, extracts and reduces time-series spectra and fits exoplanet transit light curves. Written in Python, the code can extract spectra from all four JWST instruments, ground-based long-slit spectrographs, and Keck/NIRSPEC echelle spectra. The light curve fitting routines in Tiberius can be used as standalone code to fit, for example, HST light curves extracted with other methods.