- MacCarthy, Sarah
- Madrigano, Jaime
- Maestas, Nicole
- Mafi, John N.
- Maglione, Margaret
- Magnuson, Madeline
- Main, Regan
- Maksabedian, Ervant J.
- Mallory, C K
- Mane, Muharrem
- Manheim, David
- Manville, Catriona
- Mao, Zhimin
- Marcellino, William
- Mariano, Lou
- Marjanovic, Sonja
- Markel, Matthew Wade
- Marler, Tim
- Marquis, Jeff
- Marquis, Susan L.
- Marsh, Terry
- Marshall, Grant N.
- Martin, Laurie T.
- Martin, Linda G.
- Martin, Nicholas
- Martinez, Homero
- Martini, Jeffrey
- Martino, Steven
- Martorell, Paco
- Martsolf, Grant
- Mason, Richard
- Mastbaum, Jason
- Master, Benjamin
- Mathews, Megan
- Matsuda, Mauri
- Matsumura, John
- Matthews, Luke Joseph
- Matthews, Miriam
- Mattke, Soeren
- Mattock, Michael G.
- Mattox, Teryn
- Maurer, Jürgen
- May, Linnea Warren
- Mayer, Lauren A.
- Mazarr, Michael J.
- McCombs, Jennifer Sloan
- McConnell, Bear
- McCowan, Claudia L.
- McDonald, Tim
- McEachin, Andrew
- McGarvey, Ronald G.
- McGee, Michael
- McGovern, Geoffrey
- McKernan, Megan
- McNerney, Michael
- Meadows, Sarah O.
- Meeker, Daniella
- Mehrotra, Ateev
- Meijer, Erik
- Meili, Robin
- Mejia Gonzalez, Nelly Josefina
- Melnick, Glenn
- Mendel, Peter
- Mendeloff, John
- Mendelsohn, Joshua
- Mendoza-Graf, Alexandra
- Menthe, Lance
- Meredith, Lisa S.
- Meyers, John Speed
- Miani, Celine
- Michaud, Pierre-Carl
- Midgette, Greg
- Migacheva, Katya
- Mihaly, Kata
- Mikolic-Torreira, Igor
- Miller, Benjamin M.
- Miller, Candice
- Miller, Laura L.
- Miller, Trey
- Mills, Patrick
- Mishra, Nishtha
- Miyake, Hirokazu
- Moini, Joy S.
- Moldoff, Michael B.
- Moore, Melinda
- Moore, Rich
- Morgan, Forrest E.
- Morgan Jones, Molly
- Morikawa, Jamie
- Moroney, Jennifer D. P.
- Morral, Andrew R.
- Morris, Lyle J.
- Motala, Aneesa
- Mouton, Christopher
- Muchow, Ashley N.
- Muggy, Timothy Luke
- Mulcahy, Andrew W.
- Mullen, Kathleen
- Munoz, Arturo
- Munson, Ken
- Murdoch, Wallace