Chemical shifts and line widths of N14 n.m.r. in aqueous solutions of various paramagnetic and diamagnetic complex cyanides are reported. The C13 resonance was detected in one paramagnetic complex (K3Fe(CN)6) and in several diamagnetic ones. Temperature and concentration dependence of the resonances for some compounds are also included. The results indicate that in both para- and diamagnetic complexes the line width is determined primarily by the quadrupolar relaxation. Line positions in the diamagnetic complexes do not vary much from complex to complex. In the paramagnetic complexes, on the other hand, considerable shifts have been detected and these are ascribed to the contact term. An exception both with respect to the N14 chemical shifts and the line width was found in K3Cr(CN)6.