We show that the backward-stimulated Rayleigh–Bragg scattering (SRBS) can be efficiently generated in a three-photon absorbing medium. Compared with all other known stimulated (such as Brillouin and Raman) scattering effects, the observed effect exhibits the following three features: (i) no frequency shift, (ii) a lower pump threshold, and (iii) no critical requirement for pump spectral linewidths within a range of $\mathrm{\Delta }\overline{\nu }\le 1{\mathrm{cm}}^{-1}$ . The specific nonlinear scattering medium is a three-photon absorbing chromophore solution (PRL-OT04 in chloroform), pumped by $1064\mathrm{nm}$ laser pulses of nanoseconds duration but with three different spectral linewidths. The mechanism for generating backward SRBS in a three-photon active medium is the formation of a stationary Bragg grating enhanced by three-photon-absorption-associated refractive index changes. A superior optical phase-conjugation property of the backward SRBS beam has been experimentally demonstrated by employing two different optical setups. In both cases, a specially introduced aberration influence of $4–5\mathrm{mrad}$ can be basically removed by the backward SRBS beam that retains a much smaller beam divergence of $\le 0.4\mathrm{mrad}$ .