Pumpkin Island Light is a lighthouse on Pumpkin Island, at the northwestern entrance to Eggemoggin Reach, a channel running northwest to southeast between Penobscot Bay and Blue Hill Bay on the central-eastern coast of Maine.

It was listed on the National Register of Historic Places as Pumpkin Island Light Station on February 1, 1988.

The house is a small, three-bay, single-story, wood-frame clapboarded structure, with a single gabled dormer on the east side and a wing (added in 1887) extending to the south.

A small brick oil house stands a short way off, and there is a wood-frame boathouse, built in 1885 and enlarged in 1906, at the boat slip on the north end of the island.

[4] The light station was built as part of a comprehensive plan for providing aids to navigation on the east side of Penobscot Bay that was developed in the early 1850s.