In many neutron exposure situations, dose to soft tissue from either the 1H(n, n) 1H or the 1H (n, gamma) 2H reaction accounts for ∼90% of the total dose. The 14N(n, p) 14C* reaction accounts for most of the remaining dose for source energies below ∼2.5 MeV, but for higher energies the remainder is usually divided among several different reactions. The whole body average contributions to dose from 1H(n, gamma) 2H,14N(n, p) 14C* and 1H(n, n) 1H reactions in cylindrical tissue-equivalent phantoms corresponding in size to a rat, rabbit and man are given as functions of energy and results are also presented which show the dose contributions from the 1H(n, gamma) 2H reaction as functions of depth in each of the phantoms. LET spectral and dose distributions, corresponding to a lower neutron cutoff energy of 160 keV, are given for 14 MeV neutrons and for neutrons from the Health Physics Research Reactor (HPRR) having an energy spectral distribution similar to an unmoderated fission spectrum. The energy response threshold was chosen at 160 keV to coincide with that of the recoil proton proportional counter used to measure dose from neutrons.