From a brilliant mathematician and an assistant professor at University of California, Theodore Kaczynski became the notorious American criminal—Unabomber—who was responsible for mail bombs that killed three people and injured 23 in eighteen years. He was eventually caught and sentenced to life imprisonment after his anti-technology essay sent to the media was recognised by his brother.
Khalid Sheikh Mohammed is a Pakistani terrorist, who is believed to be “the principal architect of the 9/11 attacks.” A member of Osama bin Laden's al-Qaeda organization, he led al-Qaeda's propaganda operations for a few years. He is known by at least fifty pseudonyms. He was captured in 2003 and is currently detained at the Guantanamo Bay detention camp.
A mobster and drug dealer most wanted by India, Dawood Ibrahim heads the organized crime syndicate popularluy known as D-Company. He was named No.3 on The World's 10 Most Wanted Fugitives by the FBI in 2011. He is wanted on the charges of terrorism, murder, targeted killing, extortion, and drug trafficking among other crimes.
11 Eric Rudolph
Eric Rudolph is a terrorist convicted for a series of bombings in the southern US between 1996 and 1998. He is also known as the Olympic Park Bomber. He was listed as one of the FBI's Ten Most Wanted Fugitives for five years before being captured. He is currently incarcerated at the ADX Florence Supermax prison.
A Gulf War veteran, Timothy McVeigh made headlines after carrying out the Oklahoma City bombing that killed 168 people. He defended his actions saying that he wanted to inspire a revolution against what he considered a tyrannical government. The bombing remains the most malignant act of domestic terrorism in American history. He was executed by lethal injection in 2001.
13 Ramzi Yousef
17 Richard Reid
Tamerlan Tsarnaev was a Soviet-born terrorist best remembered for planting two homemade pressure-cooker bombs at the 2013 Boston Marathon, killing three people. Many people were injured and 17 of those lost limbs. He planted the bombs with his brother Dzhokhar Tsarnaev and the two killed a policeman after the FBI declared them suspects. Tsarnaev was killed in the ensuing shootout.
19 Jihadi John
Called the ‘white widow’, British national Samantha Lewthwaite is one of the most wanted terrorists in the world. She has been linked to the Somali terrorist group Al Shabaab and was reportedly involved in the 2013 Nairobi Westgate shopping mall terror attack. She is the widow of one of the four suicide bombers who carried out the July 2005 London subway terror attacks.
28 Afzal Guru
31 Dokka Umarov
Chechen separatist Dokka Umarov later declared himself the emir of the Islamic Caucasus Emirate. Though a civil engineer by profession, he continued to indulge in criminal activities while working in Russia. He was eventually poisoned, and his body was found in a remote Russian area.
32 Saif al-Adel
36 Abu Daoud
Mullah Krekar is an Islamic scholar and militant. He is credited with founding an Islamist armed group named Ansar al-Islam. Interestingly, he claimed that he was not aware of the various terrorist attacks organized by Ansar al-Islam. He is currently serving his sentence in an Italian prison after having been deported to Italy from Norway in 2020.