The specific contact resistivity (rho(C)) for aluminum (Al), silver (Ag) and indium, (In) metallic contacts on CuInS2 thin films was determined from I-V measurements, with the purpose of having the most appropriate ohmic contact for TCO/CdS/CuInS2 solar cells; rho(C) was measured using the transmission line method (TLM) for the metallic contacts evaporated on CuInS2 thin films deposited by spray pyrolysis with ratios x = [Cu]/[In] = 1.0, 1.1, 1.3 and 1.5 in the spray solution. The results show that In contacts have the lowest rho(C) values for CuInS2 samples grown with x = 1.5. The minimum rho(C) was 0.26 Omega cm(2) for the In contacts. This value, although not very low. will allow the fabrication of CuInS2 solar cells with a small series resistance. (C) 2008 Elsevier B.V. All rights reserved.