Waterhen

Waterhen may refer to:
 * Common moorhen or common waterhen, a bird species in the rail family
 * Amaurornis rails, a genus of birds in the rail family
 * Various other birds of the family Rallidae (rails) may be informally called waterhens
 * Waterhen Indian Reserve No. 45, Northern Affairs Community in the Canadian province of Manitoba
 * Waterhen River (disambiguation), more than one river in Canada
 * HMAS Waterhen, one ship and one shore establishment in the Royal Australian Navy