- Matthew N. Hayek2
- Mayer, Larry A. (Larry Allan), 1952-2
- McSweeney, Kirby, and Loubert & Glynn, architects2
- Meyer, Joseph, 1796-18562
- Mohammad, Rezwan2
- Mosher, David Cole, 1960-2
- Napa County Geographic Information Systems 2
- Nathaniel D. Mueller2
- National Marine Protected Areas Center (U.S.)2
- National Ocean Service Hydrographic Surveys2
- Neele, Samuel John, 1758-18242
- Nghiem, Son V.2
- Nishimuraya, Yohachi2
- Noormets, Riko2
- O'Neill, Michael2
- Ocean Data and Information Network for Africa2
- Ochungo, P.2
- Paz Soldan, Mariano Felipe, 1821-18862
- Pedersen, Richard J., 1952-2
- Pedrosa, Maria Teresa2
