The purpose of this paper is to provide the best possible values of the free n-p scatteringtotal cross sections, differential cross sections, and polarization, for neutron energies between 100 keV and 30 MeV. These are extremely important numbers because they are used as standards for most fast-neutron cross-section measurements above 2 MeV and are frequently used at much lower energies. The relevant n-p and p-p data, much of which has not been used in previous evaluations of the n-p cross sections, will be discussed. It is shown that the differential cross sections below 10 MeV do not possess the isotropy frequently assumed. In fact, the cross-section ratios, σ(180°)/σ(90°), are approximately 1.023 at 7 MeV, 1.011 at 3 MeV, and 1.004 at 1 MeV. These ratios, minus 1.000, are higher than the values predicted by the Gammel formula by factors of about 2 at 7 MeV, 5 at 3 MeV, 8 at 2 MeV, and 18 at 1 MeV. In addition, it will be shown that the shape of the differential cross section is far from symmetric about 90°, the 0° cross section, in fact, being less than the 180° cross section for all energies below 30 MeV. The cross sections given here differ significantly from previous estimates based only upon n-p data up to 30 MeV. The present results are derived from calculations using phase shifts obtained by the Yale N-N Interaction Group. Comparisons have been made with the results obtained from calculations employing the Lawrence Radiation Laboratory (LRL) and Dubna phase shifts. In all cases, the general features of large anisotropy and nonsymmetry are verified.