[en] Some results obtained at ILL on Actinide compound form factors are reviewed. In the paramagnetic NpO² single crystal (5mg), an induced magnetic moment of 0.07μsub(B) was obtained at 4.2K (4.6T). In the ferromagnetic phase of NpAs² single crystal (0.2mm₃), the magnetic moment (1.46μsub(B)/Np atom) has been found fixed along the [001] direction. In both cases, the Np form factors fit satisfactorily the Np₄⁺ form factor calculated with relativistic atomic wave functions. The Fermi length for Np was deduced (b(Np) = 1.015(15)10^-₁₂cm). In the paramagnetic Laves phase UNi² compound, equally small moments are observed on U atom (0.013(1)μsub(B)) and on Ni atom (0.016(1)μsub(B)) confirming important changes in 3d band structure of Ni by hybridization with U electrons