Several rotation-vibrational bands of gaseous allene-1,l-d, have been studied by Raman spectroscopy and a number of molecular constants are obtained including the ground state constants A,-& = 2.9520* 0.0019 cm-' and D,= (3.3 f 0.6) x lo-' cm-'. A reassignment of the CD-stretching vibrations v, and vIz is proposed.