Hydrovatus is a genus of water beetles in the family Dytiscidae, containing the following species:
Hydrovatus abraeoides Régimbart, 1895
Hydrovatus absonus Guignot, 1948
Hydrovatus acuminatus Motschulsky, 1859
Hydrovatus agathodaemon Biström, 1997
Hydrovatus amplicornis Régimbart, 1895
Hydrovatus angusticornis Biström, 1997
Hydrovatus antennatus (Peschet, 1924) Hydrovatus aristidis Leprieur, 1879 Hydrovatus asemus Biström, 1997 Hydrovatus asymmetricus Biström & Wewalka, 1994 Hydrovatus badeni Sharp, 1882 Hydrovatus balfourbrownei Biström, 1997 Hydrovatus balneator Guignot, 1954 Hydrovatus baptus Guignot, 1954 Hydrovatus bedoanus Bruneau de Miré & Legros, 1963 Hydrovatus bicolor Guignot, 1956 Hydrovatus bomansi Guignot, 1955 Hydrovatus bonvouloiri Sharp, 1882 Hydrovatus brancuccii Biström, 1997 Hydrovatus bredoi Gschwendtner, 1943 Hydrovatus brevipes Sharp, 1882 Hydrovatus brevipilis Guignot, 1942 Hydrovatus brownei Omer-Cooper, 1955 Hydrovatus brunneus Guignot, 1961 Hydrovatus bullatus Guignot, 1958 Hydrovatus capnius Guignot, 1950 Hydrovatus caraibus Sharp, 1882 Hydrovatus cardoni Severin, 1890 Hydrovatus castaneus Motschulsky, 1855 Hydrovatus cessatus Guignot, 1956 Hydrovatus charactes Guignot, 1955 Hydrovatus clypealis Sharp, 1876 Hydrovatus collega Guignot, 1955 Hydrovatus compactus Sharp, 1882 Hydrovatus concii Bilardo & Pederzani, 1978 Hydrovatus concolor Sharp, 1887 Hydrovatus confertus Sharp, 1882 Hydrovatus confossus Guignot, 1958 Hydrovatus confusus Régimbart, 1903 Hydrovatus contumax Guignot, 1954 Hydrovatus coracinus Guignot, 1947 Hydrovatus crassicornis (H.J.Kolbe, 1883) Hydrovatus crassulus Sharp, 1882 Hydrovatus cribratus Sharp, 1882 Hydrovatus cristatus Guignot, 1958 Hydrovatus cruentatus H.J.Kolbe, 1883 Hydrovatus cuspidatus (Kunze, 1818) Hydrovatus dama Guignot, 1958 Hydrovatus davidis Young, 1956 Hydrovatus dentatus Bilardo & Rocchi, 1990 Hydrovatus deserticola Guignot, 1950 Hydrovatus diabolicus Biström & Larson, 1995 Hydrovatus difformis Régimbart, 1895 Hydrovatus duponti Régimbart, 1895 Hydrovatus enigmaticus Biström, 1997 Hydrovatus eximius Biström, 1997 Hydrovatus exochomoides Régimbart, 1895 Hydrovatus facetus Guignot, 1942 Hydrovatus fasciatus Sharp, 1882 Hydrovatus felixi Biström, 1997 Hydrovatus fernandoi Biström, 1997 Hydrovatus ferrugineus Zimmermann, 1920 Hydrovatus flammulatus Sharp, 1882 Hydrovatus flebilis Guignot, 1945 Hydrovatus fractus Sharp, 1882 Hydrovatus frater Régimbart, 1895 Hydrovatus fulvicollis Guignot, 1958 Hydrovatus gabonicus Régimbart, 1895 Hydrovatus galpini Omer-Cooper, 1957 Hydrovatus glaber Guignot, 1953 Hydrovatus globulosus Gschwendtner, 1943 Hydrovatus grabowskyi Régimbart, 1899 Hydrovatus granosus Guignot, 1958 Hydrovatus gravis Guignot, 1954 Hydrovatus guignoti Omer-Cooper, 1957 Hydrovatus guignotianus Guignot, 1959 Hydrovatus hamatus Guignot, 1950 Hydrovatus heterogynus Zimmermann, 1926 Hydrovatus hintoni Biström, 1997 Hydrovatus hornii Crotch, 1873 Hydrovatus imitator Biström, 1997 Hydrovatus impunctatus Guignot, 1953 Hydrovatus inexpectatus Young, 1963 Hydrovatus insolitus Guignot, 1948 Hydrovatus irianensis Biström, 1997 Hydrovatus jaechi Biström, 1997 Hydrovatus kavanaughi Biström, 1997 Hydrovatus laosensis Biström, 1997 Hydrovatus latipalpis Biström, 1997 Hydrovatus leconteii (Clark, 1862) Hydrovatus leonardii Bilardo & Pederzani, 1978 Hydrovatus lintrarius Guignot, 1958 Hydrovatus longicornis Sharp, 1882 Hydrovatus longior Biström, 1997 Hydrovatus maai Biström, 1997 Hydrovatus macrocephalus Gschwendtner, 1934 Hydrovatus macrocerus Régimbart, 1895 Hydrovatus madagascariensis Régimbart, 1903 Hydrovatus marlieri Guignot, 1956 Hydrovatus medialis J.Balfour-Browne, 1939 Hydrovatus megalocerus Bilardo & Pederzani, 1978 Hydrovatus mollis Biström, 1997 Hydrovatus mucronatus Régimbart, 1908 Hydrovatus mundus Omer-Cooper, 1931 Hydrovatus naviger Biström, 1997 Hydrovatus nefandus Omer-Cooper, 1957 Hydrovatus nephodes Guignot, 1953 Hydrovatus ngorekiensis Bilardo & Rocchi, 1999 Hydrovatus niger Gschwendtner, 1938 Hydrovatus nigricans Sharp, 1882 Hydrovatus nigrita Sharp, 1882 Hydrovatus nilssoni Biström, 1997 Hydrovatus nimbaensis Guignot, 1954 Hydrovatus niokolensis Guignot, 1956 Hydrovatus noumeni Bilardo & Rocchi, 1990 Hydrovatus oblongipennis Régimbart, 1895 Hydrovatus oblongiusculus Régimbart, 1895 Hydrovatus oblongus Omer-Cooper, 1957 Hydrovatus obsoletus Peschet, 1922 Hydrovatus obtusus Motschulsky, 1855 Hydrovatus omentatus Guignot, 1950 Hydrovatus opacus Sharp, 1882 Hydrovatus otiosus Guignot, 1945 Hydrovatus ovalis Sharp, 1882 Hydrovatus parallelipennis Régimbart, 1895 Hydrovatus parallelus Sharp, 1882 Hydrovatus parameces Guignot, 1958 Hydrovatus parvulus Régi