A drip stop device (1) for a container for liquids (C) is arranged at the outlet opening (A) of a container (C) to allow liquid to be poured without drips. The device (1) includes a first plate-like element (2) introduced, in the rolled-up configuration, in the outlet opening (A) to define a tubular duct (21). A second plate-like element (3) that substantially develops along a longitudinal direction is superimposed on a surface (22) of first plate-like element (2) with a first end (31) fixed to a perimeter portion (23) of first plate-like element (2) so that when first plate-like element (2) is rolled up substantially along the longitudinal axis (x) of second plate-like element (3), longitudinal sides (32, 33) of second plate-like element (3) come into contact with surface (22) to define one or more forced routes for the liquid flowing out of the container (C).