A tile sorting and stacking system, comprising: an input line supplying tiles to be sorted and arranged in a row; a sorting carousel which rotates with respect to a carousel axis, which comprises a plurality of gripping means and which comprises a plurality of carousel arms which develop radially from the carousel axis and which bear the plurality of gripping means, the sorting carousel being arranged such as to receive the tiles from the input line; a plurality of seatings arranged below the sorting carousel along a section of a circumference which is coaxial to the carousel axis, which seatings are conformed such as to restingly receive the tiles released by the sorting carousel and to form stacks of tiles; an output line which receives the stacks of tiles accumulated in the seatings; wherein: the input line is arranged radially or tangentially with respect to the section of circumference along which the seatings are arranged; the output line is arranged radially or tangentially with respect to the section of circumference along which the seatings are arranged; characterised in that it comprises: a transfer arm which rotates with respect to a rotation axis substantially coinciding with the carousel axis, which transfer arm is positionable angularly between a loading position, in which it is aligned radially to a seating bearing a stack of tiles to be loaded, and an unloading position in which it is arranged in proximity of the output line; loading means for loading a stack of tiles from a seating on-board the transfer arm when the transfer arm is arranged in the loading position; unloading means for unloading a stack of tiles from the transfer arm onto the output line when the transfer arm is arranged in the unloading position; the transfer arm, the loading means and the unloading means being arranged and operating in a region of space delimited superiorly by the carousel arms and which region of space is laterally delimited by the seatings, the input line and the output line; the gripping means being vertically mobile so as to collect a tile from the input line and to release the tile onto a seating. an input line supplying tiles to be sorted and arranged in a row; a sorting carousel which rotates with respect to a carousel axis, which comprises a plurality of gripping means and which comprises a plurality of carousel arms which develop radially from the carousel axis and which bear the plurality of gripping means, the sorting carousel being arranged such as to receive the tiles from the input line; a plurality of seatings arranged below the sorting carousel along a section of a circumference which is coaxial to the carousel axis, which seatings are conformed such as to restingly receive the tiles released by the sorting carousel and to form stacks of tiles; an output line which receives the stacks of tiles accumulated in the seatings; wherein: the input line is arranged radially or tangentially with respect to the section of circumference along which the seatings are arranged; the output line is arranged radially or tangentially with respect to the section of circumference along which the seatings are arranged; characterised in that it comprises: the input line is arranged radially or tangentially with respect to the section of circumference along which the seatings are arranged; the output line is arranged radially or tangentially with respect to the section of circumference along which the seatings are arranged; characterised in that it comprises: a transfer arm which rotates with respect to a rotation axis substantially coinciding with the carousel axis, which transfer arm is positionable angularly between a loading position, in which it is aligned radially to a seating bearing a stack of tiles to be loaded, and an unloading position in which it is arranged in proximity of the output line; loading means for loading a stack of tiles from a seating on-board the transfer arm when the transfer arm is arranged in the loading position; unloading means for unloading a stack of tiles from the transfer arm onto the output line when the transfer arm is arranged in the unloading position; the transfer arm, the loading means and the unloading means being arranged and operating in a region of space delimited superiorly by the carousel arms and which region of space is laterally delimited by the seatings, the input line and the output line; the gripping means being vertically mobile so as to collect a tile from the input line and to release the tile onto a seating.