Hydroporus is a genus of water beetle native to the Palearctic (including Europe), the Nearctic, the Near East, and North Africa. It contains the following species: * Hydroporus acutangulus Thomson, 1856 * Hydroporus americanus Aubé, 1838 * Hydroporus amguemensis Shaverdo, 2003 * Hydroporus ampliatus Zaitzev, 1927 * Hydroporus analis Aubé, 1838 * Hydroporus anatolicus J.Balfour-Browne, 1963 * Hydroporus angusi Nilsson, 1990 * Hydroporus angustatus Sturm, 1835 * Hydroporus apenninus Pederzani & Rocchi, 2005 * Hydroporus appalachius Sherman, 1913 * Hydroporus artvinensis Fery & Köksal, 2009 * Hydroporus askalensis Wewalka, 1992 * Hydroporus aurora Larson & Roughley, 2000 * Hydroporus axillaris LeConte, 1853 * Hydroporus badiellus Fall, 1923 * Hydroporus basino