| Name | Eagle Scout | Awards | Notability | References |
|---|
| Tom Mack | 1960 |  | Offensive left guard forLos Angeles Rams and member ofPro Football Hall of Fame | [a] |
| Mark Madsen | 1992 c. | | NBA basketball player withMinnesota Timberwolves; coach of youth basketball camp | [e] |
| Ray Malavasi † | 1944 |  | Head coach of NFL'sDenver Broncos andLos Angeles Rams | [a] |
| Charles Taylor Manatt † | 1954 |  | Lawyer, politician and businessman; chairman of the Democratic National Committee (1981–1985); Ambassador to the Dominican Republic (1999–2001) | [a] |
| Ernest Mario † | 1954 |  | Pharmaceutical industry executive and the recipient of the 2007Remington Honor Medal awarded by theAmerican Pharmacists Association | [a] |
| Walter Joseph Marm Jr. | 1958 c. | | Army colonel who received of theMedal of Honor for his actions at theBattle of Ia Drang in the Vietnam War | [219][220] |
| J. W. Marriott Jr. | 1947 |  | Chairman and CEO ofMarriott International | [a][e][d][53] |
| Boyd Matson | 1962 |  | Creator and host ofWild Chronicles, host ofNational Geographic Weekend, columnist forNational Geographic Traveler and other programs. | [221] |
| Tom Matte † | 1955 c. | | Pro Bowl andSuper Bowlrunning back for theBaltimore Colts | [222] |
| Mark Mays | 1998 c. | | Former president andCEO ofClear Channel Communications | [223] |
| Robert J. Mazzuca | 1964 |  | ProfessionalScouter and formerChief Scout Executive (2007–2012) | [224][225] |
| William Cameron McCool † | 1977 c. | | Pilot of theColumbia shuttle missionSTS-107 | [e][f] |
| Michael J. McCulley | 1959 c. | | Chief executive officer ofUnited Space Alliance; astronaut who flew on shuttle missionSTS-104 | [177][f] |
| Charles T. McDowell † | 1937 c. | | Army colonel; combatparatrooper in World War II; Soviet Union scholar and professor ofRussian language | [226] |
| Charles McGee † | 1940 |  | Tuskegee Airman and a career officer in the Air Force for 30 years; holds an Air Force record of 409 fighter combat missions flown in World War II, Korea, and Vietnam | [227] |
| Albert H. McGeehan | 1959 |  | Mayor ofHolland, Michigan (1993–2009) | [228] |
| Eugene McGehee † | 1945 c. | | Member of theLouisiana House of Representatives, 1960–1972; Louisiana state district court judge, 1972–1978 | [229] |
| Rob McKenna | 1979 |  | Washingtonstate attorney general (2005–2013) | [a][230] |
| Glen McLaughlin | 1949 |  | Venture philanthropist, founder of the McLaughlin Prize for Research in Ethics in Accounting and Taxation, head of the order of theKnights of St. John | [231] |
| Peter McLoughlin | 1971 |  | CEO of Vulcan Sports & Entertainment; president of theNational Football League'sSeattle Seahawks; president ofCenturyLink Field's management branch, First & Goal; serves on the Portland Trail Blazers Board of Directors | [a][232] |
| Sid McMath † | 1928 c. | | Decorated Marine Corps combat veteran of World War II, retired as major general; renowned attorney and progressive reformGovernor of Arkansas (1949–1953) | [233] |
| Robert McNamara † | 1932 c. | | Business executive; Secretary of Defense (1961–1968);President of the World Bank (1968–1981) | [234] |
| Michael R. McNulty | 1963 c. | | Representative from New York (1989–2009) | [235] |
| Roy W. Menninger † | 1941 |  | Physician and former leader of theMenninger Foundation, older brother of Walter | [a] |
| W. Walter Menninger | 1951 |  | Physician and former leader of theMenninger Foundation, younger brother of Roy | [a] |
| Jeff Merkley | 1972 c. | | United States Senator from Oregon (2009–present) | [a] |
| Charles D. Metcalf † | 1949 |  | Air Force major general; director,National Museum of the United States Air Force (1996–) | [a][236] |
| George Meyer | 1973 c. | | Writer and producer ofThe Simpsons | [237] |
| Edward D. Miller Jr. | 1959 |  | Dean of theMedical faculty atJohns Hopkins University and theChief executive officer of Johns Hopkins Medicine | [a] |
| Richards Miller | 1960 |  | Dentist; one of the founders ofVenturing; one of the authors ofWood Badge in the 21st century and the 2003Field Book | [a] |
| Tony Miller | 1964 c. | | Lawyer;Secretary of State of California (1994–1995) | [238] |
| Scott Mitchell | 1984 c. | | NFL quarterback (1990–2001) | [239] |
| William E. Moerner | 1967 |  | Physical chemist and chemical physicist; awarded the Nobel Prize in Chemistry (2014) | [240] |
| Matt Moniz | 2012 | | American mountaineer and speaker; 2010 National Geographic Adventurer of the Year; recipient of the Outdoor Inspiration Award | [241] |
| Lloyd Monserratt † | 1984 | | Political and community leader in California | [242] |
| David Montgomery | 2014 | | Running back for theDetroit Lions | [243] |
| Dave Moody | 1978 | | Grammy nominated,Dove Award winning artist, producer, songwriter and filmmaker | [244] |
| Jackson W. Moore | 1961 |  | Retired executive chairman ofUnion Planters Bank andRegions Financial Corporation | [a] |
| Michael Moore | 1970 c. | | Academy Award-winning (2002) film director, author, and social commentator | [245][246] |
| Emery Moorehead | 1969 | | Former American football tight end/wide receiver in the National Football League for the New York Giants, Denver Broncos, and the Chicago Bears; won a Super Bowl ring as the starting tight end and a member of the 1985 Chicago Bears | [247] |
| Jim E. Mora | 1950 |  | Sport radio commentator and analyst. Former head coach of theBaltimore Stars,New Orleans Saints and theIndianapolis Colts | [a] |
| Howard Morland | 1958 | | Air Force pilot, journalist famous for role inUnited States v. Progressive, Inc. | [248] |
| Rob Morris | 1991 c. | | Professional football player | [249] |
| Bill Morrison | 1975 c. | | Cartoon illustrator; art director ofBongo Comics; creator of the muralA Century of Values celebrating the BSA's centennial | [250] |
| John P. Morse | 1974 c. | | Former member (2007–2013) and president (2013) of theColorado Senate | [73] |
| Merrill Moses | 1990 c. | | 3-time Olympian water polo player who won a silver medal in the2008 Summer Olympics | [251] |
| Brandon Mull | 1993 | | Writer who is best known as the author of theFablehaven fantasy series | [252] |
| Louis Murphy | 2003 c. | | Collegiate and professionalAmerican football player | [253] |
| John Murtha † | 1948 c. | | Representative fromPennsylvania (1973–2010);Korean War-eradrill instructor and later colonel of the Marine Corps; decorated war veteran of theVietnam War | [a] |