阿赫迈底亚（阿拉伯语:أحمدية；乌尔都语：احمدیہ），是一个发源于英属印度的伊斯兰教运动，由米尔扎·古拉姆·艾哈迈德(1835–1908)于1887年在旁遮普创立，该派不承认穆罕默德是最后一位先知。由于对教派领袖的产生方法存有分歧，该教派已分裂成为两派——阿赫迈底亚穆斯林会和拉合尔阿赫迈底亚运动。

目前许多主流伊斯兰社区拒绝承认阿赫迈底亚为伊斯兰教教派，主流穆斯林对阿赫迈底亚信徒的迫害也经常发生。在巴基斯坦，这教派在佐勒菲卡尔·阿里·布托和穆罕默德·齐亚·哈克统治时代被政府宣布为非法，并被禁止自称穆斯林。

Ahmadiyya (/ɑːməˈdiə/; officially, the Ahmadiyya Muslim Community or the Ahmadiyya Muslim Jama'at; Arabic:الجماعة الإسلامية الأحمدية‎, transliterated: al-Jamā'ah al-Islāmiyyah al-Aḥmadiyyah; Urdu:احمدیہ مسلم جماعت‎) is an Islamic religious movement founded in Punjab, British India, near the end of the 19th century. It originated with the life and teachings of Mirza Ghulam Ahmad (1835–1908), who claimed to have appeared in fulfilment of the prophecies concerning the world's reformer during the end times, who was to bring about, by peaceful means, the final triumph of Islam and herald the eschaton as predicted in Islamic scriptures as well as the traditions of various world religions. He claimed to have been divinely appointed as the Mujaddid (renewer) of Islam, the promised Messiah and Mahdi awaited by Muslims. The adherents of the Ahmadiyya movement are referred to as Ahmadi Muslims or simply Ahmadis.