Aethionectes Sharp, 1882: 672 [1882S+OACCOD] (AFR) (6 especies)
Especie-tipo: Aethionectes optatus Sharp, 1882: 686 [1882S+OACCOD]
Africodytes Biström, 1988: 32 [1988B+GROBCD] (AFR) (5 especies)
Especie-tipo: Africodytes rubromaculatus Biström, 1988: 32 [1988B+GROBCD]
Africophilus Guignot, 1948: 164 [1948G+VQNSLH] (AFR) (19 especies)
Especie-tipo: Africophilus inopinatus Guignot 1948: 164 [1948G+VQNSLH]
Agabetes Crotch, 1873: 398 [1873C+REDYUS] (NEA, PAL) (2 especies)
Especie-tipo: Colymbetes acuductus Harris, 1828: 164 [1828H+CONENT]
Agabinus Crotch, 1873:397 [1873C+REDYUS] (NEA) (2 especies)
Especie-tipo: Colymbetes glabrellus Motschulsky, 1859: 171 [1859M+CONOCA]
Agabus Leach, 1817: 69 [1817L+THZMV3] (AFR, NEA, NEO, ORI, PAL) (3 subgéneros y 188 especies y subespecies)
Especie-tipo: Agabus paykullii Leach, 1817: 72 [1817L+THZMV3]
Agaporomorphus Zimmermann, 1921: 202 [1921Z+BZKDSU] (NEO) (12 especies)
Especie-tipo: Agaporomorphus knischi Zimmermann, 1921: 203 [1921Z+BKSSNN]
Aglymbus Sharp, 1880: 149 [1880S+APNCFC] (NEO) (12 especies)
Especie-tipo: Agabus leprieurii Aubé, 1838: 363 [1838A+HYDGYR]
Agnoshydrus Biström, Nilsson & Wewalka, 1997: 72 [1997B+O+SRTHSP] (ORI, PAL) (8 especies)
Especie-tipo: Hydrovatus laccophiloides Régimbart, 1888: 612 [1888R+VLFBRV]
Allodessus Guignot, 1953: 110 [1953G+TNNSLH] (AUS, NEO, ORI, PAL) (5especies)
Especie-tipo: Hydroporus bistrigatus Clark, 1862: 419 [1862C+CDGADN]
Allopachria Zimmermann, 1924: 194 [1924Z+NDADMA] (ORI, PAL) (47 especies)
Especie-tipo: Allopachria quadripustulata Zimmermann, 1924: 195 [1924Z+NDAMA]
Amarodytes Régimbart, 1900: 524 [1900R+SQDNAM] (NEO) (11 especies)
Especie-tipo: Amarodytes percosioides Régimbart, 1900: 525 [1900R+SQDNAM]
Amurodytes Fery & Petrov, 2013: 1823 [2013F+P+ABERCD] (PAL) (1 especie)
Especie-tipo: Amurodytes belovi Fery & Petrov, 2013: 1824 [2013F+P+ABGSER]
Andex Sharp, 1882: 371 [1882S+OACCOD] (AFR) (1 especie)
Especie-tipo: Andex insignis Sharp, 1882: 371 [1882S+OACCOD]
Andonectes Guéorguiev, 1971: 166 [1971G+NSLACD] (NEO) (2 especies)
Especie-tipo: Platynectes aequatorius Régimbart, 1899: 2 [1899R+VDEFRE]
Anginopachria Wewalka, Balke & Hendrich, 2001: 91 [2001W+O+AESPAA] (ORI) (3 especies)
Especie-tipo: Allopachria ullrichi Balke & Hendrich, 1999: 284 [1999B+H+AENSAZ]
Anodocheilus Babington, 1842: 15 [1842B+DYTDAR] (NEA, NEO) (22 especies)
Especie-tipo: Anodocheilus maculatus Babington, 1842: 16 [1842B+DYTDAR]
Antiporus Sharp, 1882: 389 [1882S+OACCOD] (AUS) (15 especies)
Especie-tipo: Hydroporus femoralis Boheman, 1858: 19 [1858B+COLEOP]
Australphilus Watts, 1978: 6 [1978W+ROTADC] (AUS) (2 especies)
Especie-tipo: Australphilus saltus Watts, 1978: 14 [1978W+AROTAD]
Austrodytes Watts, 1978: 137 [1978W+ROTADC] (AUS) (2 especies)
Especie-tipo: Cybister insularis Hope, 1842: 427 [1842H+OCPEAU]