The magnetocaloric effect (MKE) in cylindrical ferromagnetic nanowires (FN), the magnetic structure of which is characterized by a local spacing region with a Néel’s type of transformation of magnetization vector $\textbf{M}$—a cross domain wall (DW), is reviewed. For nickel and iron nanowires, it is shown that the influence of the thermal motion of DW in a weak magnetic field smaller significantly than 2$\pi$$M$ causes a negative MKE. In the absence of DW, there is a positive MKE in wires. Estimates show that it is possible by means of a negative MKE to reduce (or to increase with the reverse change of the magnetic field) the temperature of a compact comprised of 10$^{3}$–10$^{4}$ nickel (iron) nanowires by 1 K. The results presented in review are of practical importance in the context of the development of state-of-the-art technologies, which are based on the magnetocaloric properties of cylindrical FN with а cross DW.