Jordan Pond is an oligotrophic tarn in Acadia National Park near the town of Bar Harbor, Maine. It covers 187 acres (76 ha), with a maximum depth of 150 feet (46 m) and a shoreline of 3.6 miles (5.8 km).

The pond was formed by the Wisconsin Ice Sheet during the last glacial period. It is flanked on the west by Penobscot Mountain and to the northeast by the two mountains known as the Bubbles. The southern end, and outflow, are limited by the natural Jordan Pond moraine, which has been supplemented by a small dam.

The pond has clear water, with visibility normally 46 feet (14 m) and occasions of up to 60 feet (18 m) recorded, the deepest in Maine. It serves as the water supply for the village of Seal Harbor. It does not experience dissolved oxygen depletion in the lake depths.

Some types of boating are permitted, but humans and pets must stay out of the water.