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The southern of Jawa Timur, Indonesia, is an area which relatively near the subduction zone and passed by a series of active volcanoes. The existence of subduction zone triggered tectonic activities which can cause the appearance of fault structure. Based on data released by Meteorological, Climatological and Geophysical Agency (BMKG) during the last 10 years showed the high intensity of earthquakes in Jawa Timur, particularly in Pacitan and Jember regions. This study aim to determine geometry and position of the fault along the southern of Jawa Timur based on the distribution of subsurface resistivity value as a result of the magnetotelluric method. Magnetotelluric method measured natural electric and magnetic field on the surface. The acquisition data were consist of 12 magnetotelluric measurement points using Metronix instrument. The two-dimensional resistivity model showed 2 (two) low resistivity zones over Pacitan and Jember area that indicated as an active fault with the trend relatively north east-south west with the dip were tend to the west.