Ophiogomphus, commonly known as snaketails, is a genus of dragonflies in the family Gomphidae. Most of the species in the genus Ophiogomphus have beautifully marked green club-shaped abdomens, which are more noticeable in the males.

The genus contains the following species:

• Ophiogomphus acuminatus Carle, 1981 – acuminate snaketail
• Ophiogomphus anomalus Harvey, 1898 – extra-striped snaketail
• Ophiogomphus arizonicus Kennedy, 1917 – Arizona snaketail
• Ophiogomphus aspersus Morse, 1895 – brook snaketail
• Ophiogomphus australis Carle, 1992 – southern snaketail
• Ophiogomphus bellicosus Voronocovsky, 1909
• Ophiogomphus bison Selys, 1873 – bison snaketail
• Ophiogomphus carolus Needham, 1897 – riffle snaketail
• Ophiogomphus caudoforcipus Yousuf & Yunus, 1977
• Ophiogomphus cecilia (Geoffroy in Fourcroy, 1785) – green snaketail, green gomphid
• Ophiogomphus cerastis Selys, 1854
• Ophiogomphus colubrinus Selys, 1854 – boreal snaketail
• Ophiogomphus edmundo Needham, 1951 – Edmund's snaketail
• Ophiogomphus howei Bromley, 1924 – pygmy snaketail
• Ophiogomphus incurvatus Carle, 1982 – Appalachian snaketail
• Ophiogomphus mainensis Packard, 1863 – Maine snaketail
• Ophiogomphus morrisoni Selys, 1879 – Great Basin snaketail
• Ophiogomphus obscurus Bartenev, 1909
• Ophiogomphus occidentis (Hagen, 1885) – Sinuous snaketail
• Ophiogomphus purepecha González & Villeda-Callejas, 2000
• Ophiogomphus reductus Calvert, 1898
• Ophiogomphus rupinsulensis (Walsh, 1862) – rusty snaketail
• Ophiogomphus severus Hagen, 1874 – pale snaketail
• Ophiogomphus sinicus (Chao, 1954)
• Ophiogomphus smithi Tennessen & Vogt, 2004 – Sioux snaketail
• Ophiogomphus spinicornis Selys, 1878
• Ophiogomphus susbehcha Vogt & Smith, 1993 – St. Croix snaketail
• Ophiogomphus westfalli Cook & Daigle, 1985 – Westfall's snaketail

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