Dagmar Hagelin (29 Sebtember 1959 - waa la waayay 27 Janaayo 1977) waxay ahayd gabadh 17 jir ah oo u dhalatay Sweden-Argentina oo la waayay intii lagu jiray Dagaalkii wasakhda ahaa
27kii Janaayo 1977, waxaana loo malaynayaa in lagu qabtay ciidamada amniga ee El Palomar, Buenos Aires, Argentina, waxaana lagu dilay kiis aqoonsi qaldan. Aabaha Dagmar, ganacsade reer Argentine-Swedish ah Ragnar Hagelin ayaa tan iyo markii uu shaqeeyay si dadka mas'uulka ka ah loo horkeeno cadaaladda, isagoo ku eedeeyay Alfredo Astiz.