Provided is an environmentally friendly polyester film roll that is excellent in cutting properties when cutting together with a release film in a state where green sheets are laminated. A polyester film roll formed by winding a polyester film, wherein the polyester film comprises a copolyester, and has a birefringence (DELTTAnx103) of 21.0 or less at any position relative to the entire roll width, and a y value by a color tone reflection method when a plurality of films are stacked so that a total thickness measured is equivalent to 500 micro m, A polyester film roll used as a support for a ceramic green sheet in a manufacturing process of a multilayer ceramic capacitor. None

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