This is a timeline of incidents in 1981 that have been labelled as "terrorism

Terrorism

Terrorism is the systematic use of terror, especially as a means of coercion. In the international community, however, terrorism has no universally agreed, legally binding, criminal law definition...

" and are not believed to have been carried out by a government

Government

Government refers to the legislators, administrators, and arbitrators in the administrative bureaucracy who control a state at a given time, and to the system of government by which they are organized...

 or its forces (see state terrorism

State terrorism

State terrorism may refer to acts of terrorism conducted by a state against a foreign state or people. It can also refer to acts of violence by a state against its own people.-Definition:...

 and state-sponsored terrorism

State-sponsored terrorism

State-sponsored terrorism is a term used to describe terrorism sponsored by nation-states. As with terrorism, the precise definition, and the identification of particular examples, are subjects of heated political dispute...

).
May 16: One dead in an explosion in the toilets at the Pan Am terminal at New York's JFK airport. The bombing is claimed by the Puerto Rican Resistance Army. May 9: Assassination attempt against Queen Elizabeth II at Sullom Voe Terminal

Sullom Voe Terminal

The Sullom Voe Terminal is an oil and liquefied gas terminal at Sullom Voe in the Shetland Islands of Scotland. It handles production from oilfields in the North Sea and East Shetland Basin...

. Nobody killed. June 10: Eight IRA prisoners shoot their way out of the Crumlin Road Jail in Belfast, using three handguns they had smuggled in. June 28: A bomb explodes

Hafte tir bombing

On 28 June 1981 , a powerful bomb went off at the headquarters of the Iran Islamic Republic Party in Tehran, while a meeting of party leaders was in progress...

 in Islamic Rebublican Party headquarters in Tehran

Tehran

Tehran , sometimes spelled Teheran, is the capital of Iran and Tehran Province. With an estimated population of 8,429,807; it is also Iran's largest urban area and city, one of the largest cities in Western Asia, and is the world's 19th largest city.In the 20th century, Tehran was subject to...

, Iran, kills 69, including politician leader Ayatollah Mohammad Beheshti, which blamed for Mujahedin Khalq

People's Mujahedin of Iran

The People's Mujahedin of Iran is a terrorist militant organization that advocates the overthrow of the Islamic Republic of Iran....

 guerrilla group. August 29: Machine gun and grenade attack on the Stadttempel

Stadttempel

The Stadttempel is the main synagogue of Vienna, Austria. It is located in the 1st District , at Seitenstettengasse 4.-History:...

 synagogue

Synagogue

A synagogue is a Jewish house of prayer. This use of the Greek term synagogue originates in the Septuagint where it sometimes translates the Hebrew word for assembly, kahal...

 in Vienna

Vienna

Vienna is the capital and largest city of the Republic of Austria and one of the nine states of Austria. Vienna is Austria's primary city, with a population of about 1.723 million , and is by far the largest city in Austria, as well as its cultural, economic, and political centre...

, 1981 Vienna synagogue attack

1981 Vienna synagogue attack

The 1981 Vienna synagogue attack was a terror attack on the Stadttempel of Vienna, Austria carried out by Palestinian terrorists of the Abu Nidal organization. -Attack:...

 killing two people and wounding 30. Marwan Hasan and Hesham Mohammed Rajeh were convicted. August 30: A powerful bomb explodes in Prime Minister's Office headquarters, Tehran

Tehran

Tehran , sometimes spelled Teheran, is the capital of Iran and Tehran Province. With an estimated population of 8,429,807; it is also Iran's largest urban area and city, one of the largest cities in Western Asia, and is the world's 19th largest city.In the 20th century, Tehran was subject to...

, Iran, kills ten, including Iran

Iran

Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

ian President Mohammad Ali Rajai

Mohammad Ali Rajai

Mohammad Ali Rajai was the second elected President of Iran from 2 to 30 August 1981, after serving as Prime Minister under Abolhassan Banisadr. He was also Minister of Foreign Affairs from 11 March 1981 to 15 August 1981, while he was Prime Minister...

 and Prime Minister of Mohammad Javad Bahonar

Mohammad Javad Bahonar

Hojatoleslam Mohammad Javad Bahonar was an Iranian scholar, Shiite theologian and politician who served as the Prime minister of Iran from 15 to 30 August 1981 when he was assassinated by Mujahideen-e Khalq MEK, also known as PMOI and KMO...

, and injures 15, which blamed for Mujahedin Khalq

People's Mujahedin of Iran

The People's Mujahedin of Iran is a terrorist militant organization that advocates the overthrow of the Islamic Republic of Iran....

 guerrilla group. September 16: A dynamite-packed truck, following explode in outside of Palestine Liberation Organization

Palestine Liberation Organization

The Palestine Liberation Organization is a political and paramilitary organization which was created in 1964. It is recognized as the "sole legitimate representative of the Palestinian people" by the United Nations and over 100 states with which it holds diplomatic relations, and has enjoyed...

 regional headquarters, Sidin

Sidin

Sidin is a village development committee in Panchthar District in the Mechi Zone of eastern Nepal. At the time of the 1991 Nepal census it had a population of 3901 people living in 694 individual households....

, Lebanon, kills thirty-five and injures eighty. Which responsibility for Front for the Liberation of Lebanon from Foreigners guerrilla group. September 30: A powerful bomb explodes outside PLO

Palestine Liberation Organization

The Palestine Liberation Organization is a political and paramilitary organization which was created in 1964. It is recognized as the "sole legitimate representative of the Palestinian people" by the United Nations and over 100 states with which it holds diplomatic relations, and has enjoyed...

 regional headquarters, Beirut

Beirut

Beirut is the capital and largest city of Lebanon, with a population ranging from 1 million to more than 2 million . Located on a peninsula at the midpoint of Lebanon's Mediterranean coastline, it serves as the country's largest and main seaport, and also forms the Beirut Metropolitan...

, Lebanon, kills fifty and injures 255. Which responsibility for Front for the Liberation of Lebanon from Foreigners guerrilla group. October 6: Assassination of Egyptian President Anwar Sadat

Anwar Sadat

Muhammad Anwar al-Sadat was the third President of Egypt, serving from 15 October 1970 until his assassination by fundamentalist army officers on 6 October 1981...

 by Islamic Jihad. October 20: Truck bomb attack on a synagogue in Antwerp, Belgium

Belgium

Belgium , officially the Kingdom of Belgium, is a federal state in Western Europe. It is a founding member of the European Union and hosts the EU's headquarters, and those of several other major international organisations such as NATO.Belgium is also a member of, or affiliated to, many...

. Three killed and 106 wounded in the 1981 Antwerp bombing

1981 Antwerp bombing

On October 20, 1981, a truck bomb exploded outside a Portuguese Jewish synagogue in the centre of Antwerp, Belgium. Three people were killed and 106 wounded....

.http://www.nytimes.com/1986/09/07/world/jewish-targets-recent-attacks.html November 29: A bomb explodes in many vehicles, following to a school damaged in Azbakya district, Damascus

Damascus

Damascus , commonly known in Syria as Al Sham , and as the City of Jasmine , is the capital and the second largest city of Syria after Aleppo, both are part of the country's 14 governorates. In addition to being one of the oldest continuously inhabited cities in the world, Damascus is a major...

, Syria

Syria

Syria , officially the Syrian Arab Republic , is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the West, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest....

, kills sixty-four and injures 135, which responsibility for Front for the Liberation of Lebanon from Foreigners guerrilla group. December 14: A bomb explodes in Iraq

Iraq

Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

i Embassy and nearby area, Beirut

Beirut

Beirut is the capital and largest city of Lebanon, with a population ranging from 1 million to more than 2 million . Located on a peninsula at the midpoint of Lebanon's Mediterranean coastline, it serves as the country's largest and main seaport, and also forms the Beirut Metropolitan...

, Lebanon, kills twenty and injures thirty, which blamed on Kurdistan Liberation Army guerrilla group. December 17: US Army

United States Army

The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

 Brigadier General

Brigadier General

Brigadier general is a senior rank in the armed forces. It is the lowest ranking general officer in some countries, usually sitting between the ranks of colonel and major general. When appointed to a field command, a brigadier general is typically in command of a brigade consisting of around 4,000...

 James L. Dozier

James L. Dozier

James Lee Dozier is a retired US Army general officer. In December 1981, he was kidnapped by the leftist Italian Red Brigades Marxist terrorist group. He was rescued by Italian anti-terrorist forces after 42 days of captivity. General Dozier was the deputy Chief of Staff at NATO's Southern...

 is kidnapped from his apartment in Verona, Italy and held hostage for 42 days by the Red Brigades

Red Brigades

The Red Brigades was a Marxist-Leninist terrorist organisation, based in Italy, which was responsible for numerous violent incidents, assassinations, and robberies during the so-called "Years of Lead"...

.