教宗马塞勒斯二世，又译马塞卢斯二世或才禄二世（1501年5月6日－1555年5月1日，原名Marcellus Corvini，在位期间：1555年4月10日——1555年5月1日）是天主教历史上在位时间第七短的教皇，在位仅仅二十二日。出生于意大利安科纳地区，曾经是圣克罗齐地区枢机主教。他在教皇儒略三世逝世后于1555年4月9日当选成为教皇。因为身体状况不佳而受到枢机主教团压力而退位，但他在短短二十二日任期就用尽梵蒂冈资金，枢机主教团后来找到一个比教皇马尔克路二世更正直、高名誉、老练之人，他的后继者教皇保禄四世。

Pope Marcellus II (6 May 1501 – 1 May 1555), born Marcello Cervini degli Spannochi, was pope of the Catholic Church from 9 April 1555 until his death 22 days later on 1 May 1555.

He succeeded Pope Julius III. Before his accession as pope he had been Cardinal-Priest of Santa Croce in Gerusalemme. He is the most recent pope to choose to retain his birth name as his regnal name upon his accession, as well as only the second and most recent pope to date to take the name "Marcellus" upon being elected. After his death, it would be 423 years before another pope would choose a name with an ordinal number less than IV (John Paul I).