Yamatofulvius Yasunaga, 2000, Genus
Yamatolygus Yasunaga, 1994, Genus – synonym of Diognetus Distant, 1904, Genus
Yambio Linnavuori, 1974c, Genus – invalid name of Volumnus Stål, 1866, Genus
Yambio Linnavuori, 1975b, Genus – synonym of Volumnus Stål, 1866, Genus
Yangicoris Ren, 1998, Genus – homonym of Chelurotropella Ren, 2002, Genus
Yemmalysus Štusák, 1972, Genus
Yemmatropis Hsiao, 1977, Genus
Yolinus Amyot & Serville, 1843, Genus
Yotvata Linnavuori, 1964, Genus
YPSOTINGINI Drake & Ruhoff, 1965, Subfamilia – synonym of Tinginae Laporte, 1832, Subfamilia