Water boatman

Water boatman as a type of aquatic insect can mean:
 * Corixa punctata, a species known as the lesser water boatman in the United Kingdom
 * Corixidae, a family known as water boatmen in the United States and Australia
 * Notonecta glauca, a species known as the greater water boatman in the United Kingdom (called the backswimmer in the United States)
 * Sigara, especially Sigara arguta, known as water boatmen in New Zealand