Eyster

Eyster is a given name and surname. Notable persons with that name include:
Surname:

Christian S. Eyster, associate justice of the Colorado Territorial Supreme Court
Jeffrey Eyster, American architect
Kevin Eyster, American poker player
Nellie Blessing Eyster, American journalist, writer, lecturer, and social reformer
Trevor Eyster, American actor

First/middle name:

Henry Eyster Jacobs, American educator and theologian