水茄（学名：Solanum torvum）为茄科茄属下的一个种。

Solanum torvum is a bushy, erect and spiny perennial plant used horticulturally as a rootstock for eggplant. Grafted plants are very vigorous and tolerate diseases affecting the root system, thus allowing the crop to continue for a second year.

It is also known as devil's-fig, turkey berry, prickly nightshade, shoo-shoo bush, wild eggplant, pea eggplant, pea aubergine, susumber (in Jamaica), boo, terongan, tekokak, berenjena cimarrona, berenjena de gallina, berenjena silvestre, tabacón, pendejera, tomatillo, bâtard balengène, zamorette, friega-platos, kudanekayi (Kannada: ಕುದನೆಕಾಯಿ), sundaikkai (Tamil:சுண்டைக்காய்), (Malayalam: ചുണ്ട ), thibbatu (Sinhala), makhuea phuang (Thai: มะเขือพวง), suzume nasu (Japan: 雀茄子), and many other names (Howard ****, Little and others 1974, Pacific Island Ecosystems at Risk 2001).