Close-coupled scattering calculations have been carried out for collisions between HF molecules in their ground vibrational state at a total energy of 1480 cm−1. State-to-state integral and differential cross sections were determined for transitions j1j2→j′1j′2, which refer to collisions HF(j1)+HF(j2)+ΔE→HF(j′1) +HF(j′2), where ΔE is the energy gap. Particularly large cross sections are obtained for the j j+1→j+1 j transitions, which are both resonant and coupled to first order by the dipole–dipole interaction. The relationship between the calculated cross sections and the results of molecular beam scattering experiments is discussed. Total differential scattering measurements for HF–HF collisions are also reported and compared with the calculated results.