The isobaric (vapor + liquid) equilibrium (VLE) at 100.0 kPa data of two binary mixtures (3-cyano-1-butene + RS-4-vinyl-1-cyclohexene) and (3-cyano-1-butene + ZE-1-cyano-2-butene), and the isothermal (vapor + liquid) equilibrium at (373.15, 383.15 and 403.15) K data of (RS-4-vinyl-1-cyclohexene + ZE-1-cyano-2-butene) have been determined. These VLE data were checked with both point-to-point test and direct test, and they proved to be thermodynamically consistent. Further the (vapor + liquid) equilibrium data were correlated by two local composition models (Wilson + NRTL), and the interaction energy parameters of the models were optimized by least-squares. All calculated and experimental values show a very good agreement and consistency.