假声男高音（Countertenor、contre-ténor、contreténor）音域约相当于女低音（Alto）或次女高音（mezzo-soprano），通常使用假声或头声（Head Voice）。一个年轻的男性有这种能力会被称为是「Male Alto」。

A countertenor is a type of classical male singing voice whose vocal range is equivalent to that of the female contralto or mezzo-soprano voice types. The countertenor range is generally equivalent to a contralto range, extending from around G3 to D5 or E5, although a sopranist (a specific kind of countertenor) may match the soprano's range of around C4 to C6. Countertenors often are natural baritones or tenors, but rarely use this vocal range in performance.