西西里的阿加莎（Agatha of Sicily，231-251年），是一位生于西西里岛卡塔尼亚的基督教圣人和殉道的处女。根据推算，她大约在251年殉道。她是在七位妇女跟随圣母马利亚的其中一位，在天主教的常典弥撒中被记念。 她是卡塔尼亚、莫利塞、马尔他、圣马力诺和萨马拉马拉（西班牙塞哥维亚省的一个城市辖区）的主保圣人。她也是乳腺癌患者、殉道者、乳母、铸钟匠、面包师傅、火、地震和埃特纳火山喷发的主保圣人。

Saint Agatha of Sicily (231 AD – 251 AD) is a Christian saint and virgin martyr. Her memorial is on 5 February. Agatha was born at Catania or Palermo, Sicily, and she was martyred in approximately 251. She is one of seven women, who, along with the Blessed Virgin Mary, are commemorated by name in the Canon of the Mass.