Margaret Alice Kennard (September 25, 1899—December 12, 1975)[1] was a neurologist who principally studied the effects of neurological damage on primates.

[5] She also studied the effects of stimulants and cortical depressants on monkeys with brain damage.

Consequently, the notion that how well a brain can reorganize itself after damage as a function of the developmental stage is now known as the "Kennard principle".

[6] This research led to one of the earliest experimental evidence for age effects on neuroplasticity.

She worked closely with John Fulton in her famous infant brain studies.