Rare ea1th 01thofe1Tites - oxide compounds with a general fonnula RFeO3 (R = Y, La, Sm, Gd, Dy, Ho, Yb), are cmTently studied for their interesting light absorption properties caused by Fe3+ ions in visible region and have possible application as optical materials and in photocatalysis. The elementary cell of yttr·ium 01thofe1Tite YFeO3 coITesponds 01thorhombic syngony, and it is described by the space group P nma in international notation or D16 in the Schoenflies notation. Of 2h the total 60 [-point phonon modes, the modes 24 (7Ag+5B1g+7B2g+5B3g) are Raman-active, 25 (9B1u+7B2u+9B3u) are infrared-active, 8(8Au) are silent, and 3(B1u+B2u+B3u) are acoustic modes. The vibration representation for the Fe magnetic ion is as follows: r = Ag + Au. Note, that the selection rnles of the total tensor of Raman scattering (RS) for YFeO3 maintain only one complete vibrational representation of the magnetic component Fe3+: f Fe = Ag, since Au oscillation does not contr·ibute to the Raman spectnun. YFeO3 microc1ystals with 01thorhombic perovskite structure have been synthesized by a hydrothennal technique. The Ra Decomposition of the experimental curve of the Raman spectrum using the Lorentz function pennits to resolve about 20 peaks. Weak feITomagnetic ordering in YFeO3 is caused by the supersublattice exchange interaction of magnetic ions Fe3+ only. We assigned that in YFeO3 several one-phonon RS lines at 218 cm-1 as well as a two-phonon line at 1300 cm-1 and a broad band at 900 cm-1 is due to two-magnon excitation [2]. The Ag mode (218 cm-1) coITesponding to the oscillations of the magnetic Fe3 + ions reveals a strong dependence of the intensity on the angle of rotation of the sample (inset in the Figme ), which confinns its magnetic natme. Other observed lines are responsible for the ion excitation from octahedral oxygen environment of Fe3 + magnetic ions (279, 342,431,495, 630, 650 cm-1), as well as yttrium (153, 184, 323, 479 cm-1)_