Not only Muhammad but Mary's husband (Joseph) too.

According to Christian resources, Mary was 12-14 when she got pregnant. You will also see proofs from the Jews' Holiest Book, the Talmud, that girls were married off before at the age of 3, meaning that the Bible's Old Testament has no age limit on when girls can marry, and certainly the Jews had awfully abused it in the past. You will also that Prophets of the Bible who married hundreds of wives and some had even slept with their neighbor's wives and some had exposed their wives in the most disgusting PORNOGRAPHIC way to the entire world in the Bible.

Every time the Muslims talk about Prophet Muhammad peace be upon him to the anti-Islamic, the anti-Islamic use Muhammad's marriage with a girl named Aisha as a point against Islam. They claim that since Muhammad was in his 50's and Aisha was only 9 years old, then its ok to call
him a "Child Molester":

Narrated Aisha: "The Prophet engaged me when I was a girl of six (years). We went to Medina and stayed at the home of Bani-al-Harith bin Khazraj. Then I got ill and my hair fell down. Later on my hair grew (again) and my mother, Um Ruman, came to me while I was playing in a swing with some of my girl friends. She called me, and I went to her, not knowing what she wanted to do to me. She caught me by the hand
and made me stand at the door of the house. I was breathless then, and when my breathing became Alright, she took some water and rubbed my face and head with it. Then she took me into the house. There in the house I saw some Ansari women who said, "Best wishes and Allah's Blessing and a good luck." Then she entrusted me to them and they prepared me (for the marriage). Unexpectedly Allah's Apostle came to me in
the forenoon and my mother handed me over to him, and at that time I was a girl of nine years of age. (Translation of Sahih Bukhari, Merits of the Helpers in Madinah (Ansaar), Volume 5, Book 58, Number 234)"

Notice here that Aisha's mother and the Muslim women back then were ok with her marriage. It was part of the Arab custom and still is in many of the Muslim and non-Muslim countries today for girls to marry at a very young age. When a girl's body starts showing up (her breasts and her height and physical size), then she would be ready for marriage. This is further elaborated on in the "The Middle Eastern and other Cultures" and "What about Aisha's parents (mon and dad), are they too "Child Molesters"?" and "The life span 1400 years ago was very short"

The Middle Eastern and other Cultures:

If you take the time to study a little bit about the history of the tribes in South America, Middle East, Africa, India and the far eastern Oriental countries 1400 years ago, you would find that many tribes even until today allow the marriage of females at a very young age. Do you think it is fair for you to come today and attack Muhammad and call him a child molester when nobody 1400 years ago from his
tribe had objected to his marriage? Not even the Pagans of Mecca, nor the Jews and Christians of Medina ever objected to it or used it as a point against Islam as anti-Islamic do today.

We all need to understand the culture that we are talking about. Life in the Middle East is a very simple one. It is a lot simpler than what our brain
can imagine, because the simplest to us here in America may be a very difficult or complicated thing to them in the Middle East especially for those folks who live in tribes in the rural areas where they don't have TV, electricity, or any electrical equipment. They live on natural water and survive on what they have available from fruits, vegetables and animals as food.

Parents look at the girl's physical appearance when they prepare her for marriage. They don't care about her age. She could be 9 or 13, it doesn't
matter.

What about Mary, Jesus' Mother peace be upon both of them? How old was she when she
got pregnant?

Not only was it a custom in the Arab society to Engage/Marry a young girl it was also common in the Jewish society. the case of Mary the mother of Jesus comes to mind, in non biblical sources she was between 11-14 years old when she conceived Jesus. Mary had already been "BETHROED" to Joseph before conceiving Jesus. Joseph was a much older man. therefore Mary was younger than 11-14 years of age when she as "BETHROED" to Joseph. we Muslims would never call Joseph a Child Molester, nor would we refer to the "Holy Ghost" of the Bible, that "Impregnated" Mary as a "Rapist" or "Adulterer".

According to the Priest of Saint Mary's Catholic Church: "Mary was approximately 14 years old when she got pregnant with Jesus. Joseph, Mary's Husband
is believed to be around 36. Mary was only 13 when she married Joseph. When she first was arranged with Joseph she was between 7 to 9 years old."

According to the "Oxford Dictionary Bible" commentary, Mary (peace be upon her) was was 12 years old when she became impregnated.

The age of sexual consent is still quite low in many places. In Japan, people can legally have sex at age 13, and in Spain they can legally have sex at age 12. (This data comes from the Age of Consent chart, which you can see at: http://www.ageofconsent.com/ageofconsent.htm)

The Prophet's contemporaries (both enemies and friends) clearly accepted the Prophet's marriage to `Aisha without any problem. We see the evidence for this by the lack of criticism against the marriage until modern times. However, a change in culture caused the change in our times today.

A 40-year-old man having sex with a 14-year-old woman may be a "pedophile" in the USA today, but not in China today (where the age of consent is 14), nor in the USA last century. Biology is a much better standard by which to determine these things in my view, not the arbitrariness of human culture.

In the USA last century, the age of consent was 10 years old. California was the first state to change the age of consent to 14, which it did in 1889. After California, other US states joined in and raised the age of consent too. (Source:
http://www.ageofconsent.com/comments/numberone.htm)

To those who brought the craps about Muhammad was a child molester read and think before you post anything against him. As you not only against him but all other people in this planet and the worse thing is Mary’s husband, Joseph was a child molester too.