The invention is to provide frets for stringed instruments which can do away with a progress for scraping both ends of a fret main body after the frets for stringed instruments are installed into a fingerboard, and is such that both ends of the fret main body are formed in a shape along a cross-sectional shape of the fingerboard in both sides of the fingerboard in the frets for stringed instruments driven into fret grooves of a fingerboard each of which is provided with a fret main body for dividing a surface of the fingerboard and a leg portion standing unitedly on an underside of the fret main body.