Topsail (disambiguation)
# Topsail (disambiguation)

A topsail is the second square sail up a mast in a sailboat. Topsail may also refer to:

## In geography

### Canada

* Topsail, Newfoundland and Labrador, a community in Conception Bay South, Newfoundland and Labrador, Canada
   * Topsail (electoral district), a provincial electoral district in Newfoundland and Labrador

### United States

* Topsail Island, one of the barrier islands on the southern coast of North Carolina, USA
   * Topsail Beach, North Carolina, a community on the southern part of Topsail Island
   * North Topsail Beach, North Carolina, a community on the northern part of Topsail Island

## In other uses

* Topsail, a software project originating with U.S. Department of Defense's Information Awareness Office and later moved for further development with the National Security Agency
