Pulpit Rock Tower, Military observation tower in Rye, New Hampshire, US.

Pulpit Rock Tower is an eight-story concrete tower standing 73 feet tall on a state-owned parcel in northern Rye, between Neptune Drive and Pulpit Rock Road. Its walls are 12 inches thick and its floors 13.5 inches thick. Inside, a six-level spiral concrete staircase rises through the structure, with wooden ladders leading to the top two levels and an observation platform at the top.

The tower was built in 1943 as part of a coastal defense network watching over Portsmouth Harbor. It was one of several posts in a system designed to detect and report approaching threats from the ocean.

The tower's name comes from the granite outcrop called Pulpit Rock nearby, and the site is watched over by the Friends of Pulpit Rock, a local non-profit that does limited maintenance and restoration and arranges the periodic public openings. Visitors arriving on those days climb the interior to the top observation platform.

Access is via a footpath from Neptune Drive; the tower sits on a small state-owned parcel between Neptune Drive and Pulpit Rock Road. It is only periodically open to the public, with access organized by the non-profit Friends of Pulpit Rock, so confirm an opening before setting out. Inside, a six-level concrete spiral staircase serves the lower floors, and wooden ladders lead to the top two levels and the observation platform.

Pulpit Rock Tower is the only survivor of fourteen World War II coastal observation posts built in New Hampshire. The other thirteen are gone; this one stands because the state took it over and a local non-profit, the Friends of Pulpit Rock, keeps it standing.