Water-separating fuel filter, intended to be connected to a circuit for circulating fuel in an internal combustion engine, the filter comprising: - an external housing having a bottom, a fuel inlet and an outlet pipe arranged at a distance from said bottom, a lower water-collection chamber delimited by said bottom, - a filtering element housed in the housing, and - a water-separation arrangement comprising: -- a first water-separating element; -- a second water-separating element; -- support means for keeping the first water-separating element and the second water-separating element spaced apart from each other; characterised in that the arrangement, separate from the filtering element, has a roughly tubular external shape and extends inside the housing along a longitudinal axis between a first axial end and a second axial end that has an outlet connected sealingly to the outlet pipe of the housing, said arrangement comprising: - at least one distributing element situated on the same side as the first axial end and sealingly connecting an edge of the first water-separating element to an edge of the second water-separating element; and - a collecting zone extending parallel to the longitudinal axis between said distributing element and the outlet, the collecting zone communicating with the outlet, the first and second water-separating elements (21, 22) being facing each other, said collecting zone being delimited between a first lateral face belonging to the first water-separating element and a second lateral face belonging to the second water-separating element, so as to receive a first flow of fuel passing through the first water-separating element and a second flow of fuel passing through the second water-separating element. - an external housing having a bottom, a fuel inlet and an outlet pipe arranged at a distance from said bottom, a lower water-collection chamber delimited by said bottom, - a filtering element housed in the housing, and - a water-separation arrangement comprising: -- a first water-separating element; -- a second water-separating element; -- support means for keeping the first water-separating element and the second water-separating element spaced apart from each other; -- a first water-separating element; -- a second water-separating element; -- support means for keeping the first water-separating element and the second water-separating element spaced apart from each other; - at least one distributing element situated on the same side as the first axial end and sealingly connecting an edge of the first water-separating element to an edge of the second water-separating element; and - a collecting zone extending parallel to the longitudinal axis between said distributing element and the outlet, the collecting zone communicating with the outlet, the first and second water-separating elements (21, 22) being facing each other, said collecting zone being delimited between a first lateral face belonging to the first water-separating element and a second lateral face belonging to the second water-separating element, so as to receive a first flow of fuel passing through the first water-separating element and a second flow of fuel passing through the second water-separating element.