To provide an optical film having less whitening defect in a film, hardly causing uneven hardness of an active ray curing resin layer or a stripe defect in an antireflection layer, and having decreased color irregularity in a film manufactured by a film forming method with superior productivity in simple equipment, and to provide a polarizing plate and a display apparatus using the optical film.

The optical film is formed by extruding a melted material by heating which contains a cellulose resin having 2.5 to 2.9 total substitution degree of acyl groups, a plasticizer and a UV absorbent having 490 to 50,000 weight average molecular weight, and then by cooling. The UV absorbent has at least two or more benzotriazole skeletons as a UV absorbing skeleton.