Galvanomagnetic effects of the dilute nitrogen-iron alloys have been investigated in detail between 4.2 and 250 K. The specific resistivity increment by solute nitrogen in pure iron is determined experimentally as 8.9 μΩcm/at.%. It is revealed that Kohler plots for the transverse magnetoresistance of quenched and unquenched specimens lie on the same curve, while it is not so for the longitudinal magnetoresistance, and Kohler plots for the longitudinal effect of single crystals containing solute nitrogen, are different from one another for each crystal axis (100), (110) and (111). Furthermore, a substantial deviation from Matthiessen's rule was found out by the measurement of the temperature dependence of the electrical resistivity of the alloy between 4.2 and 250 K. The Matthiessen's rule parameter is about seven. Kohler's rule holds for the Hall resistivity. In the low-field limit the plots do not go through the origin. The tangent of the Hall angle is 1.0 × 10 −2 for quenched specimens. This non-zero value can be explained with the asymmetric scattering proposed by Smit. The extraordinary Hall constant is proportional to the ohmic resistivity.