We prepared palladium (Pd)-nanoparticle-dispersed graphitelike carbon (Pd NDC) film by cosputtering Pd and carbon by radio frequency (RF) sputtering. The preparation method is very simple and reproducible, and the Pd content can be well controlled. We studied the film with respect to its structural characterization and electrochemical properties. Transmission electron microscopy (TEM) images show that the structure of the carbon film is graphitelike and that the Pd particles are highly dispersed in the carbon matrix. The Pd nanoparticle size is very uniform with a diameter of about 4 nm, which is larger than that of previously reported platinum nanoparticles formed in graphite-like carbon film. Electrochemical properties, such as the electrocatalytic oxidation of hydrogen peroxide, are studied by cyclic voltammetry and hydrodynamic measurement. The current density of hydrogen peroxide concentration at a Pd NDC film electrode was higher than that at a Pd bulk electrode. As a result, we found that the relationship between hydrogen peroxide and current density at Pd NDC film is much more linear than that at a Pd bulk electrode with high stability.