Magnetotelluric measurements made at 10 locations in and around the Kenyan Rift Valley in 1973-74 have been processed to yield single station induction vectors and magnetotelluric principal impedances. Following a brief description of the field work and the data processing procedure, the results are presented and subjected to both qualitative and quantitative interpretations. The induction vector results indicate a concentration of current below the rift valley. Since the maximum impedances are along the rift for sites within the valley but at right angles to the rift outside it, the apparent resistivity results are qualitatively consistent with the existence of a good conductor there. Within the rift maximum apparent resistivities lie F m 7. The variation of maximum and minimum apparent resistivity with period: (a) KER, (b) MOL, (c) JOR and (d) MUT. The variation with period of the azimuth of the major resistivity axis: (el KER, (f) MOL, (g) JOR and (h), MUT, (i) the location of KER, MOL, JOR and MUT relative to the major faults of the rift.