Apparatus for feeding groups of thin-shaped food products to a packaging machine, comprising: a plurality of first transportation lines arranged to line up the horizontally arranged thin-shaped food products in a plurality of parallel rows; a loading and inverting station of the thin-shaped food products for each first transportation line, each loading and inverting station comprising: at least one paddle conveyor (3a, 3b, 3a', 3b') comprising a predetermined number of paddles (30a, 30b, 30a', 30b') arranged in succession and spaced apart so as to be able to receive a single thin-shaped food product on each paddle; said paddle conveyor (3a, 3b, 3a', 3b') being arranged downstream of the first transportation line and actuated so as to be able to receive in succession the food products coming from the first transportation line, wherein a predetermined number of said products received on the paddle conveyor (3a, 3b, 3a', 3b') forms a group of products; wherein the paddle conveyor (3a, 3b, 3a', 3b') is guided along a closed path configured so that the paddle conveyor (3a, 3b, 3a', 3b') overturns when it reaches an unloading position; extraction means of the group of products arranged so as to extract the group of products from the paddle conveyor (3a, 3b, 3a', 3b') when the paddle conveyor (3a, 3b, 3a', 3b') is in the unloading position; a common second transportation line arranged to carry said group of products extracted by the extraction means from each paddle conveyor (3a, 3b, 3a', 3b') at the unloading position to a feeding position towards the packaging machine; wherein the plurality of first transportation lines are arranged in parallel to each other, the common second transportation line being parallel to the plurality of first transportation lines, and wherein each loading and inverting station comprises drive belts (31a, 31b) which are tensioned between an upstream end close to the corresponding first transportation line and a downstream end close to the common second transportation line, in a forward direction that is perpendicular to the directions of forward motion of the first and second transportation lines (2, 4), the common second transportation line being fed in succession by a group of products coming from each loading and inverting station. a plurality of first transportation lines arranged to line up the horizontally arranged thin-shaped food products in a plurality of parallel rows; a loading and inverting station of the thin-shaped food products for each first transportation line, each loading and inverting station comprising: at least one paddle conveyor (3a, 3b, 3a', 3b') comprising a predetermined number of paddles (30a, 30b, 30a', 30b') arranged in succession and spaced apart so as to be able to receive a single thin-shaped food product on each paddle; said paddle conveyor (3a, 3b, 3a', 3b') being arranged downstream of the first transportation line and actuated so as to be able to receive in succession the food products coming from the first transportation line, wherein a predetermined number of said products received on the paddle conveyor (3a, 3b, 3a', 3b') forms a group of products; wherein the paddle conveyor (3a, 3b, 3a', 3b') is guided along a closed path configured so that the paddle conveyor (3a, 3b, 3a', 3b') overturns when it reaches an unloading position; extraction means of the group of products arranged so as to extract the group of products from the paddle conveyor (3a, 3b, 3a', 3b') when the paddle conveyor (3a, 3b, 3a', 3b') is in the unloading position; a common second transportation line arranged to carry said group of products extracted by the extraction means from each paddle conveyor (3a, 3b, 3a', 3b') at the unloading position to a feeding position towards the packaging machine; wherein the plurality of first transportation lines are arranged in parallel to each other, the common second transportation line being parallel to the plurality of first transportation lines, and wherein each loading and inverting station comprises drive belts (31a, 31b) which are tensioned between an upstream end close to the corresponding first transportation line and a downstream end close to the common second transportation line, in a forward direction that is perpendicular to the directions of forward motion of the first and second transportation lines (2, 4), the common second transportation line being fed in succession by a group of products coming from each loading and inverting station.