Graphite oxide (GO) was prepared by using the chemical oxidation of pristine graphite, and the GO dispersions in water were sprayed onto substrates. The prepared GO film was soaked in a hydrogen iodide (HI) water solution to make reduced graphite oxide (rGO) film. The resulting rGO film was analyzed using a 4-pin probe analyzer and current-voltage measurements, and the film's conductivities were compared in both the in-plane and the out-of-plane directions. In addition, the film's conductivities were analyzed according to the loadings (10-30 wt.%) of multiwalled carbon nanotubes (MWNTs) added to the rGO films. The experimentally-measured conductivities were compared and are discussed based on the film structures of rGO and MWNT-embedded rGO.