A slide rail assembly includes first and second rails, a retaining member, and a bracket. The second rail is movable to a retracted position relative to the first rail. The retaining member is connected to the second rail. The bracket includes a side plate connected to the first rail, an end plate bent from the side plate, and a movable member movably connected to the side plate. The movable member has at least one retaining portion corresponding to the end plate. When the second rail is in the retracted position, at least a portion of the retaining member faces the movable member so that the second rail can, via the retaining member, restrict displacement of the movable member relative to the retaining member.