Ḥamzah ibn ‘Abdul-Muṭṭalib (Arabic: حمزة ابن عبد المطّلب) (c.570–625) was a companion and paternal uncle of the Islamic Nabī (Arabic: نَـبِي, Prophet) Muhammad.
His kunyas were "Abū Umārah" (Arabic: أَبُو عُمَارَةَ) and "Abū Ya‘lā" (Arabic: أَبُو يَعْلَى). He had the by-names Asad Allāh (Arabic: أسد الله, "Lion of God") and Asad al-Jannah (Arabic: أسد الجنّة, "Lion of the Garden"), and Muhammad gave him the posthumous title Sayyidush-Shuhadā’ (Arabic: سَـيِّـدُ الـشُّـهَـدَاء, "Chief of the Martyrs").
Hamzah's father was Abdul Muttalib ibn Hashim ibn Abd Manaf ibn Qusayy from the Qurayshi tribe of Mecca. His mother was Hala bint Uhayb from the Zuhra clan of Quraysh. His parents met when Abdul Muttalib went with his son Abdullah to the house of Wahb ibn 'Abd Manaf to seek the hand of Wahb's daughter Aminah. While they were there, Abdul-Muttalib noticed Wahb's niece, Hala bint Uhayb, and he asked for her hand as well. Wahb agreed, and Muhammad's father Abdullah and his grandfather Abdul-Muttalib were both married on the same day, in a double-marriage ceremony. Hence, Hamzah was the younger brother of Muhammad's father.