Events in libraries are mostly used for activities in reading, writing, and a place to learn requires adequate lighting intensity. Lighting is a good library space provides comfort in their activities indoors. This is one aspect of library service to the satisfaction and comfort user. This research was conducted in the library reading room STIE Widya Wiwaha Yogyakarta. With the purpose of evaluating the artificial lighting in the library reading room STIE Widya Wiwaha. Does it fit with the minimum lighting standards recommended by SNI 03-6575-2001 Procedures On Artificial Lighting System Design Building that is equal to 300 lux. This research is descriptive quantitative method ergonomics approach.