Nancy Cottrell Maryboy is a Cherokee and Navajo Indigenous science expert and educator.

[4] Her Ph.D. thesis, cowritten with David Begay, was titled Nanitá̕ Są̕ąh Naagha̕í Nanitá̕ Bike̕h Hózhóón (Living the order: dynamic cosmic process of Diné cosmology).

One of those projects was "Cosmic Serpent - Bridging Native and Western Science Learning in Informal Settings," a four-year effort providing collaboration opportunities between Indigenous communities and science education professionals; the project won a $550,000 grant from the NSF.

[3][12] She has collaborated with NASA's Goddard Space Flight Center and Jet Propulsion Laboratory on several projects, including a planetarium show titled "See the Skies Through Navajo Eyes.

[2] In 2016 she was honored with a Lifetime Achievement Award from the Association of Tribal Archives, Libraries, & Museums.