Guide chain for a fabric roller blind, intended to be placed to connect between a lateral upright and a handle bar below a fabric of said blind, comprising a plurality of guide elements linked together along an extension line and susceptible of being moved between: - an extended position, in which said guide elements are at least partially extended, aligned below said fabric substantially horizontally, and - a retracted position, in which said guide elements are at least partially housed within said handle bar and aligned substantially vertically; between said retracted position and said extended position, an intermediate position being provided in which said extension line forms at least one curve, in which said guide elements are tilted with respect to each other; each said guide element comprising two facing side walls substantially parallel to said extension line and connected by at least one central body; said guide chain being characterized in that each guide element of said plurality of guide elements comprises: - at least one shaped pin provided on at least one of said side walls, projecting in a transverse direction with respect to said extension line and provided with a transverse section which has a width, extended substantially parallel to said extension line, greater than a height thereof extended substantially orthogonal to said extension line, and - at least one groove, which: - is made on at least one of said side walls and remains defined between at least two sides; - is extended starting from an inlet opening made on a perimeter edge of said at least one side wall of said guide element, and - houses the shaped pin of a contiguous said guide element; said shaped pin being susceptible of being stopped against said sides with said guide chain in the retracted position and in the extended position and of defining a maneuvering distance with said sides with the guide chain in said intermediate position - an extended position, in which said guide elements are at least partially extended, aligned below said fabric substantially horizontally, and - a retracted position, in which said guide elements are at least partially housed within said handle bar and aligned substantially vertically; - at least one shaped pin provided on at least one of said side walls, projecting in a transverse direction with respect to said extension line and provided with a transverse section which has a width, extended substantially parallel to said extension line, greater than a height thereof extended substantially orthogonal to said extension line, and - at least one groove, which: - is made on at least one of said side walls and remains defined between at least two sides; - is extended starting from an inlet opening made on a perimeter edge of said at least one side wall of said guide element, and - houses the shaped pin of a contiguous said guide element; said shaped pin being susceptible of being stopped against said sides with said guide chain in the retracted position and in the extended position and of defining a maneuvering distance with said sides with the guide chain in said intermediate position - is made on at least one of said side walls and remains defined between at least two sides; - is extended starting from an inlet opening made on a perimeter edge of said at least one side wall of said guide element, and - houses the shaped pin of a contiguous said guide element;