Shamokin is a city in Northumberland County, Pennsylvania, United States. Surrounded by Coal Township at the western edge of the Anthracite Coal Region in central Pennsylvania's Susquehanna River Valley, the city was named after a Saponi Indian village, Schahamokink. At the 2020 United States census, the population was 6,942.

The Edison Illuminating Company was established by Thomas Edison on December 17, 1880, to construct electrical generating stations, initially in New York City. The company was the prototype for other local illuminating companies that were established in the United States during the 1880s.