The invention relates to a lower exoskeleton intended to be worn by a user and comprising: a pelvic element (1) provided with means for securing to an upper part of the users body two lower supports (2) which are provided with means for securing to the users lower limbs and which rest on the ground during stance phases, each of said supports comprising a thigh segment and a tibia segment connected by a knee link configured to allow flexion and extension between the thigh segment and the leg segment and hip links for connecting the two lower supports to the pelvic element. According to the invention, the pelvic element comprises: an inner segment (30) extending symmetrically in relation to a central sagittal plane and associated with means for securing to the user and two outer segments (33) extending symmetrically and being connected to respective distal ends of the inner segment by means of linking members (31, 32, 34 31), allowing at least flexion between the inner segment and each outer segment along two orthogonal axes. Each lower support is connected by one of the hip links to one of the outer segments (33).L invention est relative à un Exosquelette inférieur destiné à être porté par un utilisateur, et comportant : un bassin (1) pourvu de moyens de solidarisation à une partie supérieure du corps de lutilisateur deux supports inférieurs (2) pourvus de moyens de solidarisation aux membres inférieurs de lutilisateur et reposant sur le sol durant les phases de station debout, les supports comportant chacun un segment de cuisse et un segment de tibia reliés par une liaison de genou configurée pour permettre une flexion et une extension entre le segment de cuisse et le segment de jambe des liaisons de hanche pour relier les deux supports inférieurs au bassin. Selon linvention, le bassin comporte : un segment interne (30) s étendant symétriquement par rapport à un plan sagittal médian et associé aux moyens de solidarisation à l utilisateur deux segments externes (33)
