A removable golf-ball aligning device (RGAD) (10) that is designed to allow a golfer, especially when putting, to align a golf ball to travel in a straight trajectory. The RGAD (10) is designed to be attached to the bill (186) of a golf cap (182) or a golf visor (184) and is comprised of three major elements: a bill attachment member (12), a panel (30) and a means (46) for attaching the panel (30) to the bill attachment member (12). The panel (30) is made of a transparent material (56) and includes a lower section (36) that terminates with a lower straight edge (32). The lower section is coated with a non-glare coating (60) that can consist of a non-glare paint (62) or a black non-glare tape (64).