A fiber aggregate in which some of the fibers are equipped with fibrils including fibrils extending in the thickness direction of the fiber aggregate and which is equipped with a network structure formed by portions of the fibrils where the fibrils have been bonded to themselves and/or to fibers at the ends thereof along at least one of the thickness directions of the fiber aggregate； a liquid-absorbing sheet-shaped object including the fiber aggregate； and a process for producing the fiber aggregate. Thus, it is possible to provide: a fiber aggregate in which fibrils are utilized to attain, in particular, excellent liquid diffusion in the surface and excellent liquid absorption in the inner part； a liquid-absorbing sheet-shaped object including the fiber aggregate； and a process for producing the fiber aggregate.
