Collection place
- Ma'ats, Big Lagoon, Humboldt County1 objects
- Mackie Mound, Linn County, Western Oregon1 objects
- Madera County, California1 objects
- Madhya Pradesh, India1 objects
- Madre de Dios Region, Southern Peru1 objects
- Magrogoy's shrine, Teb village, Tamil municipality4 objects
- Malaay village, Kanifay municipality, Yap Island1,587 objects
- Malawi1 objects
- Malay Peninsula, Southeast Asia5 objects
- Malaysia3 objects
- Mali3 objects
- Mangai, Kenya1 objects
- Manteca Canyon area, Tecate municipality, Baja California4 objects
- Manteca Canyon, Tecate municipality, Baja California4 objects
- Maravilla site, La Montanita, Venezuela7 objects
- Mariana Islands, Micronesia4 objects
- Maricopa County, Arizona1 objects
- Marin County, California376 objects
- Marina Bay, Richmond, Contra Costa County74 objects
- Martis Valley, Placer County, California1 objects