A trash collector for vehicles in which trash produced in the vehicles are collected and processed neatly and efficiently. The trash collector includes: a body having a space for containing trash and an opening portion; a fixing clip which is detachably installed on an inner side surface of the body; and a roll of vinyl bags which are hung on the hanging portions of the fixing clip and are successively supplied downwards in the body. Here, shield wings are formed on the inner side surface of the body and are inserted into the roll of vinyl bags to thus prevent trash from being exposed. A plurality of leaf springs extend along the opening portion, to enable the space of the body to be maintained at an opened state and with an elastic force, if flexural strengths of the leaf springs exceed threshold points of the leaf springs.