We present here some recent advances in the field of atom‐molecule and electron‐molecule collisions involving hydrogen and its isotopes. For the first topic the possibility of exploiting our large and complete hydrogen database by a suited scaling law is explored with the purpose of obtaining databases of hydrogen isotopes. In the electron‐molecule case, resonant dissociative attachment and ro‐vibrational excitation cross sections for the so‐called 14 eV resonance are derived.