Liquid crystal polymer film, polymer film, and laminate

A liquid crystal polymer film comprising:

• a layer A;
• a layer B on at least one surface of the layer A;
• and
• a layer C, wherein the layer B, the layer A, and the layer C are provided in this order, the liquid crystal polymer film contains a filler in at least one layer of the layer A or the layer B, and a number density of the filler is higher inside the liquid crystal polymer film than on a surface of the liquid crystal polymer film,
• wherein the layer A contains a liquid crystal polymer, a linear expansion coefficient of the liquid crystal polymer film is −20 ppm/K to 50 ppm/K, and
• the liquid crystal polymer has a constitutional unit represented by any of Formulae (2) and (3),
• —CO—Ar2—CO— Formula (2)
• —X—Ar3—Y— Formula (3)
• in Formulae (2) and (3), Ar2 and Ar3 each independently represent a group represented by Formula (4), X and Y each independently represent an oxygen atom or an imino group, and hydrogen atoms in Ar2 and Ar3 may be each independently substituted with a halogen atom, an alkyl group, or an aryl group
• —Ar4—Z—Ar5— Formula (4)
• in Formula (4), Ar4 and Ar5 each independently represent a phenylene group or a naphthylene group, and at least one of Ar4 and Ar5 represents a naphthylene group, and Z represents an oxygen atom, a sulfur atom, a carbonyl group, a sulfonyl group, or an alkylene group.