Considering that the majority of the people who live in Iran aren't Arabs, can Iran technically be considered part of the Arab World?

Iran has never been part of the Arab world. The great majority of them don't speak Arabic.

Iran is part of the Islamic world.

No - but, unfortunately, they are all lumped in there together with this now negative 'Arab' tag as the big pollies think that they will have a better chance to manipulate reports about them and have us all think that they hate us. They don't!!!

From an article by a US journalist ....

"I asked many Iranians what they thought was the most common misconception of their country. Most said that they wanted people to know that they are not Arabs. Indeed, the word “Iran” comes from “Aryan,” a nomadic tribe that probably migrated to the area from the Caucasus in about 2,000 B.C.E. From 637 C.E. to 1050, Arabs controlled Iran, and introduced Islamic culture, religion and laws to the area. Today, though, only 3 percent of Iran’s population is classified as Arab. Half is considered Persian and 25 percent is Azeri (from Azerbaijan.)

Iran is not considered a part of the Arab world.
However, it has two Arabian provinces.

"The Arab World (Arabic: العالم العربي‎; Transliteration: al-ʻālam al-ʻarabi) refers to Arabic-speaking countries stretching from the Atlantic Ocean in the west to the Arabian Sea in the east, and from the Mediterranean Sea in the north to the Horn of Africa and the Indian Ocean in the southeast. It consists of 25 countries and territories with a combined population of 325 million people straddling two continents."

"Since most modern borders of the Arab world are products of Western imperial powers, they often ignore distinct ethnic and geographic boundaries. Thus, in addition to regions with large Arab populations being located in non-Arab countries (such as the Turkish province of Hatay, populated mainly by indigenous Iskanderun Syrians, and the Iranian province of Khuzestan or Arabstan, as it's called by its own people, populated mainly by Iranian Arabs), many peripheral states of the Arab world have border-straddling minorities of non-Arab peoples, as is the case with the non-Arab Black Africans of southern Sudan and southern Mauritania."

"States and territories:
Algeria (al-Jazā'ir الجزائر)
Bahrain (al-Baḥrayn البحرين)
Chad (Tshād تشاد) Arabic is one of the official languages, the other being French. Often not considered an Arab state.
Comoros (Juzur al-Qamar جزر القمر) (Comorian and French are the other two official languages)
Djibouti (Jībūtī جيبوتي) (French is the other official language)
Egypt (Miṣr مصر)
Eritrea (Iritriya إرتريا) Arabic is one of the official languages, the other being Tigrinya. Has a large number of Arabic speakers. Often not considered an Arab state.
Iraq (al-`Irāq العراق) (Kurdish is the other official language (minority))
Israel (Isrā'īl اسرائيل) (Though not recognized by many Arab states, such as Saudi Arabia, Israel has a large native Arabic-speaking minority. Arabic is one of two official languages, the other being Hebrew)
Jordan (al-'Urdunn الأردن)
Kuwait (al-Kuwayt الكويت)
Lebanon (Lubnān لبنان)
Libya (Lībiyā ليبيا)
Mauritania (Mūrītāniyā موريتانيا)
Morocco (Al-Maġrib المغرب)
Oman (`Umān عمان)
Palestinian Authority (Al-Sulta Al-Filasṭīniyya السلطة الفلسطينية) (Full member of Arab League, but not recognized by the U.N., Israel, or most Western states)
Qatar (Qaṭar قطر)
Saudi Arabia (al-`Arabiyya as-Sa`ūdiyya العربية السعودية)
Somalia (aṣ-Ṣūmāl الصومال) (Somali is the other official language)
Sudan (As-Sūdān السودان) (English is the other official language (minority))
Syria (Sūriya سورية)
Tunisia (Tūnis تونس)
United Arab Emirates (al-Imārāt al-`Arabiyyah al-Muttaḥidah الإمارات العربيّة المتّحدة)
Western Sahara (as-Ṣaḥrā' al-Ġarbīyyah الصحراء الغربية) (Status contested between the POLISARIO Front and the Government of Morocco, which has administered most of Western Sahara since 1975)
Yemen (al-Yaman اليمن)"
Source and further information:
http://en.wikipedia.org/wiki/Arab_world

yes.
even though only 1% of the people speak arabic.iran became an islamic nation in 1979.
most of the languages and dialects spoken in iran are also spoken in many other neighbouring countries.so it's like birds of feather.....
turkey is having major problems becoming a member of the E.U.mainly because they are an arab nation.

No. The language of Iran is Farsi, and the most important religion is Islam.

This does not mean they are Arabs. You might as well argue that Peruvians are really Romans because most of them are Roman Catholics and they use the Roman alphabet.

they may not be an Arab majority but they are Islamic....Persia was what Iran was before the Arab Islamic changed it....Sudan, Egypt etc. , are Islamic majorities ,same as Arab nations....
its not the etnics, its the Islamic Rule......the Arabs just use their god and religion to rule, control and suppress,oppress, their people..