The isotope shift (238-235) has been determined for 225 emission lines of uranium in the infrared region between 1984 and 5393 cm** minus **1 (5. 0-1. 85 mu m), and the isotope shift of several levels of neutral uranium has been obtained. The shifts were determined from spectra recorded on the McMath Solar Fourier-transform spectrometer (FTS) at Kitt Peak National Observatory.