The specific conductivity of sodium dodecyl sulfate, cetyl pyridinium chloride, and sodium nitrate in acetamide melt was measured at 89°C up to (2.067, 1.599, and 3.705) mol‚kg-1 , respectively. The specific conductivity maximum has been observed for sodium nitrate as well as for the two ionic surfactants. This is the first report on the observation of a specific conductivity maximum for any ionic surfactant, which is otherwise a general feature of a normal electrolyte in aqueous or nonaqueous media. In acetamide melt, the concentrations of sodium dodecyl sulfate and cetyl pyridinium chloride corresponding to their conductivity maxima are found to be less than that of sodium nitrate, which is probably due to micellization of ionic surfactants.