An organic film transistor containing a compound, which is composed of n repeating units represented by Formula (1-1), (1-2), (101-1), or (101-2), in a semiconductor active layer is an organic film transistor using a compound having high carrier mobility and high solubility in an organic solvent. (Cy represents a benzene ring, a naphthalene ring, or an anthracene ring; each of R11 to R14 and R15 to R18 independently represents a hydrogen atom or a substituent; each of Ar1 to Ar4 independently represents a heteroarylene group or an arylene group; each of V1 and V2 represents a divalent linking group; m represents an integer of 0 to 6; when m is equal to or greater than 2, two or more groups represented by V1 may be the same as or different from each other; n is equal to or greater than 2; p represents an integer of 0 to 6; and when p is equal to or greater than 2, two or more groups represented by V2 may be the same as or different from each other.)