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Wikipedia

Matthew is the standard English for the Hebrew Bible name Μαθθαιος, a Koine Greek transliteration of the Aramaic diminutive מתי (Mattay, Maty). From Latin Matthæus, the English spelling Matthew comes directly from the French Matthieu (earlier Matheu). Ultimately derived from the Hebrew name מתתיהו (Matatyahu, Mattathias) or מתיתיהו (Matityahu, Mattithiah), Matthew means "gift of YHWH". The Hebrew name is also spelled מתניהו (Matanyahu, Mattaniah). Related names include נתניהו (Netanyahu, Nethaniah), and with swapped syllables יהונתן (Yehonatan, Jonathan).

A common name in the West, it is traditionally spelled "Matthew" in English, but sometimes "Mathew", and even as the Muslim name Mathyu. Matt is the most common hypocoristic form of the name in English. "Matthew" can also be a middle name, and the English surnames Matthew, Matthews, Mathis, Mathewson, and Mattison are among many family names derived from it.
The name "Matthew" has historically been distinguished from the related but less common (in English) name Matthias, and is clearly distinguished in most other European languages.

Matthew the Evangelist

Matthew, Apostle, and once a tax collector, composed the Gospel of Christ.

Urban Dictionary

Matt:

An extremely good looking male, otherwise known as a Sexy Beast. Throughout history, Matts have been known to be an exceptional specimen of the human male. The 'Matt' are often popular due to their social adeptness.

Girl 1: Hey, did you see that new movie 300? It was kick ass.
Girl 2: Of course! It was like a movie of 300 half-naked Matts!