On 10 October 2015 at 10:04 local time (EEST) in Ankara, the capital city of Turkey, two bombs were detonated outside Ankara Central railway station. With a death toll of 109 civilians, the attack surpassed the 2013 Reyhanlı bombings as the deadliest terror attack in modern Turkish history. Another 500 people were injured. Censorship monitoring group Turkey Blocks identified nationwide slowing of social media services in the aftermath of the blasts, described by rights group Human Rights Watch as an "extrajudicial" measure to restrict independent media coverage of the incident.

On 23 January 2015, there was a bombing at the civil court premises of Ara, Bhojpur district, Bihar, India.

On December 21, 2015, in Bagram, a suicide bomber blew himself up, killing six NATO service members.
In January 2015, the Corinthia Hotel in Tripoli was attacked by men affiliated with the Islamic State of Iraq and the Levant (ISIL). The hotel was popular with foreign officials and government workers; it had previously housed the Libyan Prime Minister.

Taliban militants stormed a prison outside the city of Ghazni on 14 September 2015, freeing more than 355 inmates. At least 148 of the escapees are considered to be a serious threat to national security. According to the Ministry of Interior, of those escape, 148 had been jailed for attacks on security forces, while 207 had been convicted for other crimes. Only three prisoners had been recaptured.

The 2015 Jalalabad suicide bombing occurred on 18 April 2015. A suicide bomber on a motorcycle, allegedly affiliated with ISIL's Khorasan Province, struck a bank in the city of Jalalabad in Nangarhar Province, Afghanistan, killing at least 33 people and injuring another 100. It marked the first major attack by ISIL Khorasan after it was formed three months earlier, in January 2015.

On 10 August 2015, a suicide bombing occurred in the Kabul International Airport street, near the entrance to Kabul Airport, killing five people and wounding 16 people. This occurred days after a series of suicide attacks in the Afghan capital killed dozens and wounded hundreds.

At least 10 people died and more than 60 were wounded in a suicide bomb attack in Kabul, Afghanistan, on 22 August 2015.

The Khost suicide bombing occurred on 12 July 2015 in Khost Province when a suicide bombing killed at least 33 people, including 12 children and another 10 people were wounded.

On 15 March 2015, two explosions took place at Roman Catholic Church and Christ Church during Sunday service in Youhanabad, Lahore, Pakistan. At least 15 people were killed and seventy were wounded in the attacks.

The 2015 Sana'a mosque bombings were four suicide attacks on 20 March 2015 in Sana'a, Yemen.

The Suruç bombing was a suicide attack by the Islamic State of Iraq and the Levant (ISIL) against Turkish leftists that took place in the Suruç district of Şanlıurfa Province in Turkey on 20 July 2015, outside the Amara Culture Centre. A total of 34 people were killed and 104 were reported injured. Most victims were members of the Socialist Party of the Oppressed (ESP) Youth Wing and the Socialist Youth Associations Federation (SGDF), university students who were giving a press statement on their planned trip to reconstruct the Syrian border town of Kobanî.