Disclosed is a hydroxy polyamide represented by the following general formula (1) and having a 5-amino isophthalic acid derivative structure in the main chain structure. (1) (In the formula, m and n represent integers, X represents at least one tetravalent organic group, Y represents at least one divalent organic group having a 5-amino isophthalic acid derivative structure, and Z represents at least one divalent organic group).