Nidal A. Ayyad (Arabic: نضال عياد; born 1968) is a convicted perpetrator of the 1993 World Trade Center bombing.

[1] Ayyad was born in 1968 in Kuwait to Palestinian parents after they fled Palestine due to the Six-Day War, he moved to the United States in 1985, became a naturalized U.S. citizen in 1991, graduated from Rutgers University and worked as a chemical engineer at AlliedSignal in New Jersey.

Instead, the explosion did not go accordingly and did not cause the building to collapse but rather destroyed the parking garage killing 6 people.

[4] Ayyad was arrested on March 10, 1993 the FBI matched his DNA to traces of saliva found on the letter's envelope.

[6] In March 1994, Ayyad and four co-participants Mohammed A. Salameh, Mahmud Abouhalima, and Ahmad Ajaj were each convicted in the World Trade Center bombing.