Colored aromatic polycarbonate resin compositions are prepared by dispersing a colorant (b) selected from phthalocyanine-based compounds, anthraquinone-based compounds and ultramarine blue in a polyalkyleneglycol compound (c) having a number-average molecular weight of 62 to 4000 of formula (2): HO--[--CHR.sup.1--CHR.sup.2--].sub.m--OH (2) where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen atoms or alkyl groups, and m is not less than 1. The dispersion is added to an aromatic polycarbonate resin (a) kept in a molten state which has a viscosity-average molecular weight of not less than 16000 and contains a branched constitutional unit of formula (1): ##STR00001## in an amount of 0.3 to 0.95 mol % where X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, or a divalent connecting group --O--, --S--, --CO--, --SO-- and --SO.sub.2--.