A machine (1) for orienting objects (T) includes a hopper (2) for receiving the objects (T) in bulk and a belt conveyor (3) with a plurality of small blades to withdraw the objects (T) from the hopper (2). The belt conveyor (3) has an ascending length (5) suitable to select the objects (T) having a predetermined orientation, so that, at the upper end of the ascending length (5) only the objects (T) having all the same predetermined orientation are present on the belt conveyor (3). The small blades form a rest surface facing upwardly in the ascending length (5) and have a plurality of reliefs suitable to prevent free rolling of the objects (T) rested on the rest surface.