The problem of acoustic radiation from a pair of spherical sources vibrating with time‐harmonic velocity distributions which are constant in strength and axisymmetric about the same axis is considered. In particular, the modification of the radiation load on one source due to the presence of the other is evaluated. Numerical results are presented for the four cases of equisize sources which are either in phase or 180° out of phase from one another and vibrating in either the pulsating (monopole) or oscillating (dipole) modes. For sources which are small relative to the wavelength, the results are essentially as predicted by previous analyses of point sources, with the exception of the in‐phase dipoles where, for small wavelength separations between the sources, the radiation resistance of one dipole is not doubled by the presence of the other. As the wavelength size of a source is increased, the near presence of another source affects the reactive component of the radiation loading more than the resistive component.