I know I have been guilty of conflating the terms Arab and Middle Eastern and Muslim in various ways, although I should know better. So at the end of this post I have copied full definitions as a public service. These are all from teachmideast.org. It is also interesting to think of these definitions of Arab, Middle Eastern, and Muslim in light of the options for race given on the US Census:

Note that neither Arab nor Middle Eastern is an option. In fact, the United States Census Bureau defines “White” as “A person having origins in any of the original peoples of Europe, the Middle East, or North Africa.” So, according the US government people of Middle Eastern origins are white. In my mind that seems to be a different definition of white than the day to day, person on the street version.
For comparison, definitions of Arab, Middle Eastern, and Muslim:
Who is an Arab?
Arab is an ethno-linguistic category, identifying people who speak the Arabic language as their mother tongue (or, in the case of immigrants, for example, whose parents or grandparents spoke Arabic as their native language). Arabic is a Semitic language, closely related to Hebrew and Aramaic. While Arabs speak the same language, there is enormous ethnic diversity among them. Some Arabs have blue or green eyes and light hair and skin, others have dark hair and skin and brown eyes.
There are 26 countries or territories in western Asia and Africa where Arabic is the official or one of the official languages of the state: Algeria, Bahrain, Chad (with French), Comoros (with French and Shikomor), Djibouti (with French), Egypt, Eritrea (with Tigrignan), Iraq (with Kurdish), Israel (with Hebrew), Jordan, Kuwait, Lebanon, Libya, Mauritania, Morocco, Oman, the Palestinian Authority, Qatar, Saudi Arabia, Somalia (with Somali), Syria, Sudan, Tunisia, United Arab Emirates, Western Sahara, and Yemen.
In each of these countries there may be different ethnic groups whose mother tongue is not Arabic. Members of these groups may also speak Arabic, but they might not identify themselves as Arabs. For example, in both Chad and Iraq, members of non-Arab ethnic groups use Arabic as a lingua franca to communicate. Also, in many Arab countries, before the founding of the state of Israel, there were active Arabic-speaking Jewish communities; most of these populations moved to Israel after its founding in 1948.
There are also minorities of Arabs in many other countries, such as Iran, Turkey, France, the United States, etc.
[Map of Arabs (color countries with Arab majorities one color, but also give percentages of Arabs in those countries and in countries with significant Arab minorities)]
Who is a Middle Easterner?
To answer “Who is a Middle Eastern?” we must ask ourselves “What is the Middle East?” The Middle East itself is not a fixed term. It was originally coined in the early twentieth century to designate the area between the British colony of India and the Near East (the Balkans and western part of the Ottoman Empire). Of course, the term itself incorporates a European perspective, since the Middle East is only “east” relative to western Europe; had the Chinese had the power to impose their perspective in our maps, the region might have been known as the Midwest!
“Middle East” is not a specific or absolute location, like West Asia or North Africa, which define a relatively clear geographical location by reference to broadly accepted continental borders. Rather, it is a term describing a region, or a geographical area sharing certain characteristics. This certainly complicates deciding who could be classified as a “Middle Eastern”.
Depending on how we define those characteristics, the borders of the Middle East can change. For example, we might describe the Middle East geographically as a hot and arid region in western Asia between the Mediterranean in the west and the Indian subcontinent in the east; or we might describe it historically as a predominantly Muslim area sharing a common cultural heritage based on Arabic; or we might describe it strategically from an outside perspective as a politically volatile region with large reserves of oil.
Each definition has problems and might lead to a different map of the “Middle East.” For example, Turkey, Israel and Iran are not Arabic-speaking countries, yet most maps would include them in the Middle East. The Arabic-speaking countries of North Africa, including Egypt, Libya, Tunisia, Algeria and Morocco, are not in Asia. Most current maps leave them out of the Middle East, except for Egypt, despite a long shared history and many cultural similarities with other Arab countries. Yet the same maps often include Iran, Afghanistan and sometimes even Pakistan – countries with different languages, some shared history and some very different cultural and historical bases.
There is no real correct answer to the question, “What is the Middle East?” There are different definitions, which often overlap and often change according to shifting perspectives. One interesting note is that the concept of the Middle East has been adopted in most of the languages of the region themselves: in Arabic, the region is referred to as al-sharq al-awsat, in Turkish orta dogu, in Persian khavarmiyaheh and in Hebrew mizrach tichon. So although the concept is relatively new, came from the outside, and is imprecise, it’s used throughout the region!
This website privileges a historical, linguistic and cultural understanding of the Middle East, and therefore includes the following countries in our map of the Middle East:
Algeria
Bahrain
Egypt
Iran
Iraq
Israel
Jordan
Kuwait
Lebanon
Libya
Morocco
Oman
The Palestinian Authority
Qatar
Saudi Arabia
Sudan
Syria
Tunisia
Turkey
United Arab Emirates
Yemen
Who is a Muslim?
By most estimates, about one-fifth of humanity’s six billion plus people, or approximately 1.3 billion, is Muslim. While we tend to think of Muslims as being in the Middle East, perhaps because that is where Islam began, most Muslims don’t live there. In fact, the country with the most Muslims is Indonesia in southeast Asia (179 million Muslims), and the largest regional concentration of Muslims is in the South Asian countries of India, Pakistan and Bangladesh, with nearly half a billion Muslims. Africa also has a very large Muslim population-not only are there over 180 million Muslims in North Africa, but also approximately 220 million Muslims in the countries of sub-Saharan Africa as well. There are also minority Muslim communities in countries across the world, from China to western Europe to Canada and the United States. Think about the cultural diversity of these Muslims all over the world, from Indonesia to Senegal, from Boston to Bangladesh, from Syria to Germany!
The definition of Muslim varies depending on which criteria you use. Most textbooks give a definition based on practice of the “five pillars” of Islam, so that Muslims are those who give the profession of faith, pray five times a day, fast during Ramadan, give charity to the needy, and make the pilgrimage to Mecca at least once during their lifetimes. On the other hand, all Muslims, like members of all human religions, are not equally devout and don’t practice Islam exactly the same way, so you might consider Islam to also be a cultural identity and heritage as well as a religious belief.
Some cast the net very widely, and argue that a Muslim is anyone who believes in one of the monotheistic religions, including Jews and Christians, since “muslim” literally means one who submits to the will of God. On the opposite end of the spectrum, there are exclusionist definitions of Islam that would write off anyone who isn’t a “good enough” Muslim, or who has a different doctrinal or political belief, by the standards of a particular group.