正式演员（外文名：PERFORMER）指在一部电影中担任了至少一部分说、唱或舞蹈表演的人员，属于演员类别。其与临时演员、龙套演员存在职业性质差异，姓名会被列入影片的演员名单中。

performer是正式演员的英文对应术语，其释义为n. 表演者, 执行者, 完成者 n[法] 执行者, 履行者, 实行者。相关例句包括She was a consummate performer、It made sense to show the statue looking ahead at what was happening in front of it, so that the living performer of the ritual could interact with the divine or deceased recipient、A performer plays classical selections on the violin、He is a performer who consistently pushes the envelope of TV comedy和An artist, performer, or player of consummate skill。