- Alexander Graham Bell (dec.) - noted inventor, provided financial support directly to Dr. Montessori. Helped establish the first Montessori class in Canada and one of the first in the United States.
- Bruno Bettelheim (dec.), noted psychologist/author, was married to a Montessori teacher.
- Erik Erikson (dec.) - anthropologist/author, had a Montessori teaching certificate.
- Jean Piaget (dec.) - noted Swiss psychologist, made his first observations of children in a Montessori school.
- Alice Waters - restaurateur and writer, is a former Montessori teacher.
- Thomas Edison (dec.) - noted scientist and inventor, helped to found a Montessori school.
- Mister Rogers (dec.) - children's TV personality, strong supporter of the Montessori method.
