So this is a difficult question to answer due to the complex definition of Terrorism, however the answer is absolutely yes. For the sake of answering this question I am going to define terrorism as an act committed by a group against a civilian population in order to inspire fear. I am sure that some would disagree with this definition as too broad or poorly focused but I think it will suit for the purpose of answering this question.

Working in that framework there are still countless examples of Christian communities commuting acts of terrorism both against other Christians and against non Christian groups and societies. One conflict that featured frequent examples of terrorism was the Lebanese Civil War in which Christian and Muslim sectarian groups battled for control of Lebanon. Christian groups were guilty of countless acts of bombing, massacre, murder and torture during the course of the war. An excellent example of these acts were committed by a Maronite Christian group and was called the Tl al-Zaata massacre in which Maronite Christians entered a Palestinian refugee camp in Lebanon and killed thousands of refugees. Other bombings, revenge killings, and other forms of terrorism occurred daily during the course of the war, and atrocities were committed by both sides.

For an example of Christian on Christian violence one needs look no farther than Northern Ireland during the Troubles (the period of struggle between the Catholic groups who largely supported Northern Ireland joining the South, and the Protestant groups who favored staying a part of the United Kingdom). Again acts of terror were committed by numerous groups supporting both sides, most famously t the IRA and the UDF. The IRA is famous for its bombing spree throughout Northern Ireland and the United Kingdom for most of the seventies and the decades after. An excellent example of IRA terrorism would be the Hyde Park and Regent's Park bombing in which IRA soldiers planted bombs in London in an effort to spread fear throughout the English population and encourage them to abandon their claims of Northern Ireland. Again the Protestant forces committed many similar acts against the Northern Irish Catholic population.

Both of these Conflicts were notorious for the tremendous amount of what we today would call terrorists acts. They were a huge part of both struggles and the examples I have provide may not be the best, simply the first that came to mind. If you go throughout history you will find other examples of acts that would be considered terrorism committed by Christian groups. I simply chose these two conflicts to focus on because I have some familiarity with the subject and they are modern enough that I am less queasy about applying modern definitions to past acts. Both of these occurred at a time in which our modern definition of terrorism was largely established.

I have not studied terrorist acts committed by Jewish peoples, but would be surprised if there were not a comparable number to other groups.

This question, at least to me, seems to be asking in a roundabout way are Muslims the only ones who commit terrorism, and the answer is an emphatic no. Terrorism is not unique to any peoples or religion. I have not read extensively enough on the Jewish people to mention specifics but would be very interested if someone on this sub knows more.

Some broad sources that make great reading.

The Troubles- Coogan, Tim Pat. (1995). The Troubles: Ireland's Ordeal 1966-1996 and the Search for Peace. London: Hutchinson.

The Lebaneese Civil War- Friedman, Thomas, 1990, From Beirut to Jerusalem, London: Collins.

Fisk, Robert, 2001, Pity the nation: Lebanon at War, Oxford: Oxford University Press.