Jon Lloyd Stryker (born ca. 1958) is an American architect, philanthropist and activist for social and environmental causes. He is a billionaire stockholder and heir to the Stryker Corporation medical supply company fortunes of grandfather Homer Stryker alongside sisters Pat and Ronda. In 2010, his net worth was estimated at $1.2 billion.
Stryker is the founder and President of Arcus Foundation, an international foundation supporting Great Ape conservation and social justice endeavors. The threatened colobine species Rhinopithecus strykeri is named for him.