Isobaric enthalpy increment measurements on nitrogen in the gas phase are presented over the temperature range 160 K to 260 K, at the pressures (0.3, 3, 5, and 15) MPa. The measurements were performed in an electrically heated flow calorimeter. Comparisons have been made with the best available measurements from the literature. A comparison with the SRK and Jacobsen equations of state is also given.