The name "Muhammad" has been discovered in the Bible in the original Hebrew language.
In the 5th chapter of the Shir haShirim ( שיר השירים ), which is one of the five megilot or Sacred Scrolls that are part of the Hebrew Bible or for short the "Song of Solomon" (also called "Song of Songs"). That chapter is giving a prophecy about an individual to come, a mystery man.
Song of Songs 5:15 compares this prophetic mystery man to the land of "Lebanon" which is the land of the Arabs. This implies that the mystery man would be an Arab.
Song of Songs 5:10 says: "My beloved is white and ruddy, pre-eminent above ten thousand." This is a prophecy of Prophet Muhammad as he conquered Mecca. It is a well known historically documented fact that in the year 630 CE Muhammad entered Mecca as the leader of an army of "ten thousand men".
This verse and the preceding verse (v. 11) also match Muhammad's physical description as found in Muslim sources (light skin and black hair).
In reading the English translation of Song of Songs 5:16 it finishes the description by saying: "He is altogether lovely" but what most people don't know is that the name of that man was given in the original megilot.
Here is the name is written in ancient Hebrew as it appears in verse sixteen: מחמד . It is read as: "Mahammad". According to Ben Yehuda's Hebrew-English Dictionary, it is correctly pronounced as "Mahammad".
To further verify go to this translator link, paste the name מחמד and then translate it into English. You will see that מחמד is translated as "Muhammad".
Click the Translator
You can also see and listen to the Song of Songs in its original form, in Hebrew where Muhammad is mentioned by name in the below link (please notice the "im" in Hebrew is a plural of respect):