| Yalia Ding, 2006 (Delphacidae) |
| Yamirrina Löcker, 2020 (Cixiidae) |
| Yanganaka Löcker, 2015 (Cixiidae) |
| Yangdelphax Bellis & Donaldson, 2016 (Delphacidae) |
| Yangissus Chen, Zhang & Chang, 2014 (Issidae) |
| Yangsinolacme Ding, 2006 (Delphacidae) |
| Yanunka Ishihara, 1952 (Delphacidae) |
| Yarnikada Löcker & Fletcher, 2006 (Cixiidae) |
| Yetkhata† Song, Szwedo & Bourgoin, 2019 (Yetkhatidae) |
| Yichunus Ding, 2006 (Delphacidae) |
| Youtuus Chen & Gong, 2018 (Caliscelidae) |
| Yuanchia Chen & Tsai, 2009 (Delphacidae) |
| Yucanda Ball & Hartzell, 1922 (Dictyopharidae) |
| Yukonodelphax Wilson, 1992 (Delphacidae) |
| Yuripopoverus† Stroinski & Szwedo, 2012 (Ricaniidae) |
