• Species and lower taxa
• Higher taxa
• Common names

Udana Walker, 1868, Genus – synonym of Dalpada Amyot & Serville, 1843, Genus

Udeodrymus Bergroth, 1920, Genus – synonym of Lasiosomus Fieber, 1860, Genus

Udonga Distant, 1921, Genus

Ugloderes Štys, 2002, Genus

Uhlerites Drake, 1927, Genus

Ulmica Kerzhner, 1988, Genus

Ulmicola Kirkaldy, 1909, Genus

Ulmocyllus Seidenstücker, 1964, Genus

Ulonemia Drake & Poor, 1937, Genus

Ulumiris Seidenstücker, 1965, Genus

Umslopogas Kirkaldy, 1902d, Genus – synonym of Stenotus Jakovlev, 1877, Genus

Urartucoris P.V. Putshkov, 1979, Genus

Urentius Distant, 1903, Genus

Ures Distant, 1911, Genus – synonym of Gerris Fabricius, 1794, Genus

Urochela Dallas, 1850, Genus

Urochelellus Yang, 1937, Genus

Urolabida Westwood, 1837, Genus

Urostylididae Dallas, 1851, Familia

Urostylidinae Dallas, 1851, Subfamilia

Urostylis Westwood, 1837, Genus

Ursocoris Hahn, 1834, Genus – synonym of Odontoscelis Laporte, 1833, Genus

Usilanus Distant, 1909, Genus

Usingerida Kormilev, 1955, Genus

Utopnia Reuter, 1881, Genus

Utukhengal Štys, 2002, Genus

Uzeliella Poppius, 1911c, Genus – synonym of Zanchius Distant, 1904, Genus