枕额肌又称作颅顶肌，是覆盖于颅骨上面的肌肉。起端有两处：

某些数据列枕额肌为两块独立的肌肉：枕肌及额肌。但是解剖学术语（Terminologia Anatomica）现时归枕额肌为单一块肌肉。

枕额肌收缩能上提眉毛（属于表情肌之一），也能将头皮前后移动，一般认为能移动耳朵实际是因为枕额肌的作用。

The occipitofrontalis muscle (epicranius muscle) is a muscle which covers parts of the skull. It consists of two parts or bellies: The occipital belly, near the occipital bone, and the frontal belly, near the frontal bone. In humans, the occipitofrontalis only serves for facial expressions.