Adam Yahiye Gadahn (Arabic: آدم يحيى غدن‎, Ādam Yaḥyā Ghadan; born Adam Pearlman, September 1, 1978) is an American who is a senior operative, cultural interpreter, spokesman and media advisor for the islamist group Al-Qaeda. Since 2004, he appeared in a number of videos produced by Al-Qaeda as "Azzam the American" ('Azzām al-Amrīki, عزام الأمريكي, sometimes transcribed as Ezzam Al-Amerikee). Gadahn converted to Islam in 1995, at the age of 17, at a California mosque and is described as a "homegrown," meaning that he has converted to an ideology so firmly that he is now willing to harm his country of origin. He is believed to have inspired the 2007 Osama bin Laden video.

In 2004, he was added to the FBI Seeking Information – War on Terrorism list. On October 11, 2006 he was removed from that list, and placed on the Bureau of Diplomatic Security Rewards for Justice Program list of wanted criminals. On the same day, Gadahn was indicted based on the testimony of the FBI case agent E.J. Hilbert II, in the Southern Division of the United States District Court for the Central District of California by a federal grand jury for the capital crime of treason for aiding an enemy of the United States (i.e. Al-Qaeda). Gadahn is the first American charged with treason since Tomoya Kawakita in 1952.

Adam (Hebrew: אָדָם‎, Arabic: آدم‎, Syriac: ܐܵܕ݂ܵܡ) is a figure in the Book of Genesis, the Qur'an and the Kitáb-i-Íqán. According to the creation myth of Abrahamic religions, he is the first human. In the Genesis creation narratives, he was created by Yahweh-Elohim ("Yahweh-God", the god of Israel), though the term "adam" can refer to both the first individual person, as well as to the general creation of humankind. Christian churches differ on how they view Adam's subsequent behavior (often called the Fall of man), and to the consequences that those actions had on the rest of humanity. Christian and Jewish teachings sometimes hold Adam and Eve (the first woman) to a different level of responsibility for the Fall, though Islamic teaching holds both equally responsible. In addition, Islam holds that Adam was eventually forgiven, while Christianity holds that redemption occurred only later through the sacrifice of God's son, Jesus Christ. Bahá'í Faith, Islam and some Christian denominations consider Adam to be the first Prophet.