Mabon—Welsh for "son"; a Celtic god had this name.
Macario (Macarius)—Latin for "blessèd."
Madhav—Sanskrit for "vernal" and "of the Springtime."
Madhukar—Sanskrit for "beehive."
Madron—A saint had this name.
Mahavira (Mahavir)—Sanskrit for "great hero"; this was the last of the 24 Tirthankaras and the founder of Jainism.
Mahatma—Sanskrit for "great soul"; this was the nickname lovingly bestowed upon the indeed great soul Gandhi.
Mahendra (Mahinder)—Sanskrit for "great Indra."
Mahmud (Mahmood, Mehmet, Mehmud, Mehmed)—Ancient form of Mohammad.
Mahyar—Tajik name; a character in Shahnameh.
Mainio—Finnish for "excellent."
Makaio—Hawaiian form of Matthew.
Makar—A character in The Painted Bird; he has sex with rabbits and oversees, while naked, his children having sex with one another and with goats up in the attic of their barn.
Makhmud—Kazakh name; it looks like it might be the Kazakh form of Mohammad.
Makram—Arabic for "noble, generous."
Maksím (Maxim, Maksym)—A famous bearer was the writer Maksím Alekséyevich Górkiy. Unfortunately will probably get seized on by the trendies, desperate for another name besides Maxwell, Max, and Maximillian that they can use and still get yet ANOTHER little Max.
Malachi—Hebrew for “angel.” I’m told this name has gotten modern-day Satanic associations because it was used in Children of the Corn. Is some recent movie enough to discard an ancient name that had no negative associations for thousands of years?
Malak—Unisex Arabic name meaning "angel."
Malamis—Greek for "golden."
Maldwyn—Welsh form of Baldwin, which means "brave friend."
Maleko—Hawaiian form of Mark.
Malik—Common Arabic name meaning "king"; the name of Amira’s big brother in Soheir Khashoggi’s Mirage.
Malkhazi—Georgian for "youthful."
Mandarias (Mandarios)—An Armenian saint who was martyred on 6 December.
Mandeep (Mandip)—Sanskrit for "lamp of the mind."
Manel—Catalán form of Manuel.
Manfred (Manfried, Manfredo)—German name composed of the elements "strength" and "peace."
Mani—Tajik name. It is also a Sanskrit name which means "jewel."
Manish—Sanskrit for "lord of the mind."
Manlio (Manlius)—Latin for "morning."
Mannuccio—From The Decameron.
Mansur (Mansoor)—Arabic for "victorious."
Manu—Sanskrit for "man" and another name for Vishnu.
Manuchehar—Tajik name; a character in Shahnameh.
Marduk (Morduk)—The principal Babylonian god, creator of heaven and earth, reigning over fertility, light, the sky, heaven, and battle. This is where the name Mordechai got its origins from (much like Esther came from Ishtar).
Marek—Estonian name. This is also the Czech and Polish form of Mark.
Mart—Estonian name; a famous bearer is GULAG survivor and human rights activist and spokesperson Mart Niklus, who was once beaten by his jailer during a visit with his mother because he dared to speak to her in their native tongue.
Martin (Maarten, Martijn, Mairtín, Marten, Mårten, Martinho, Márton, Martti, Martyn)
Martuccio—From The Decameron.
Masetto—From The Decameron.
Mas'ud (Masood, Massoud)—Arabic for "lucky."
Masuyo—Japanese for "to increase the world."
Matvéy—Russian form of Matthew.
Maynard (Meinard, Meinhard)—German for "brave strength."
Mazin—Arabic for "rain clouds."
Mehrab—Tajik name; a character in Shahnameh.
Mehrak—Tajik name; a character in Shahnameh.
Mehran (Mehrang)—Tajik name; a character in Shahnameh.
Mehrdad—Tajik and Persian for "gift given by the Sun."
Mehrzad—Tajik for "born of the Sun."
Meir (Meyer)—An unfortunate famous bearer is the modern-day racist Rabbi Meir David Kahane (1932-90), founder of the racist Kach Party. One of his twisted followers was the infamous murderer Baruch Goldstein (whom his son called a hero, sickly enough), and his aforementioned son Binyamin Zev, who founded the also-racist party Kahane Chai, also condoned the deadly actions of the assassin Yigal Amir. The younger Kahane was killed in 2001 by Arab extremists in the West Bank while travelling with his family.
Melampus—A seer in Greek mythology.
Meleager—One of the Argonauts.
Melecertes—One of Ino's sons.
Melech (Melek)—Hebrew for "king."
Melisso—From The Decameron; the penultimate story on the penultimate day, the hideously dated one where the moral of the story is to learn to beat your wife. At least Melisso isn't the one who's the wife-beater.
Memnon—He was slain by Achilles during the Trojan War.
Menachem—Hebrew for “comforter.” Probably the most famous recent bearer was the seventh Lubavitcher rebbe, Rebbe Menachem Mendel Schneerson.
Menashe—Hebrew for “causing to forget.”
Menelaus—Greek for "withstanding the people."
Menes—A Pharoah had this name.
Mercer—Latin for "merchant."
Mercutio—I'd only recommend this as a middle name.
Meron—Hebrew for “sheep” or “troops.”
Meshach—Babylonian for "who is what Aku is?" Aku was the god of the Moon.
Meshulam—Hebrew for "friend."
Methuselah—Only on the right person.
Meuccio—From The Decameron.
Micah—Hebrew for “Who is like God?”; one of the minor prophets in the Bible. Unfortunately I’ve been hearing this name more often; I hope it won’t join Elijah and Isaiah in making the leap from sacred to profane!
Micaiah—Unisex Hebrew name meaning "who is like God?"
Mico—From The Decameron.
Midhat—Arabic for "eulogy/praise."
Miesko (Mieszko)—Polish pet form of Mieclaw, Mieczyslaw, Miecislaw, Mieslaw, Mojslaw, and Maslaw.
Miklós—Hungarian form of Michael.
Millard—A famous bearer was our thirteenth President, the second one who inherited it rather than being elected to it, Millard Fillmore. He married his teacher Abigail, who was two years his senior (and the first First Lady to have a job after marriage), five years after her death marrying a woman thirteen years his junior, and installed the first bathtub, kitchen stove, and library in the White House, along with being the President who first sent diplomats to Japan. He was also the first President who had had a stepmother, and became chancellor to the University of Buffalo after leaving office.
Milo—A bearer of note is the shameless profiteer Milo Minderbinder in Catch-22.
Milogost—Old Slavonic for "grace guest."
Milorad—Slavic name made up of the elements "happiness" and "favour."
Miloslaw (Miloslav)—Slavic name meaning "favour and glory."
Minghino—From The Decameron.
Minoru—Japanese for "seed."
Miroslav (Miroslaw, Mirek, Mirko)—Slavic name meaning "peace and glory."
Mirza—Persian for "prince." The friend to whom Usbek addresses the famous series of letters on the Troglodytes in Montesquieu's The Persian Letters is named Mirza.
Mis'id (Mus'ad)—Arabic for "lucky."
Misenos (Misenus)—A Roman who was drownt for his hubris.
Mladen—Slovenian name meaning “young.”
Mnason—Greek for "reminding." How cool is it to have one of the few names starting in a silent M?
Modestiy (Modesty, Modesti, Modyestiy)
Mohan—Sanskrit for "bewitching." Shiva, Krishna, and Kama also are called by this name.
Mohandas—Means "servant of Mohan"; the wonderful Gandhi bore this name.
Mongkut—Thai for "crown."
Morad—Tajik for "wish" or "desire." Unfortunatel in English it's very close to "moron."
Mordechai (Mordecai, Mordekai, Mordekhai)—In the Bible, he is Esther’s uncle (some say cousin); recent famous bearers have been the founder of Reconstructionist Judaism, Mordecai Kaplan (whose daughter Judith, in 1922, was the first girl on record to have a bat mitzvah), as well as Mordekhai Anielewicz, the leader of the ZOB (Jewish Fighting Organisation) in the Warsaw Ghetto, as well as the publisher of the ghetto newspaper Against the Stream, and Mordechai Chaim Rumkowski, the leader of the Lodz Ghetto, the last ghetto to be liquidated, in the Spring of 1944. Rumkowski was one of the last members in that particular ghetto who was sadly sent to the smokestacks, but both he and Anielewicz were heroes while they were living and continue to be an inspiration even today; they showed the world that Jews can fight back even against a mighty oppressor, holding out longer than any of the invaded nations in Europe had, and rebutting the stereotype that Jews are weak cowards who run away instead of defending themselves.