A single-layer matte film or sheet which comprises a filler and a biodegradable resin (A) comprising a blend of a biodegradable polyester (a1) having a glass transition temperature Tg of 10.degree. C. or lower and a biodegradable polyester (a2) having a glass transition temperature Tg of 30.degree. C. or higher, and in which at least one side thereof has a surface gloss (45-degree gloss) as measured in accordance with ASTM-D2457-70 of 60% or lower.