番杏（学名：Tetragonia tetragonioides）是番杏科番杏属的植物，又名法国菠菜。

一二年生肉质草本，无毛。茎圆，半蔓性，极易分枝，丛生匍匐于地面，表皮细胞有针状结晶体，颗粒状突起。卵形至三角形的叶片互生，全缘，叶柄肥厚，嫩叶上有银色粉状物。夏秋间叶腋开黄花，花被钟状四裂；3～8心皮合生，子房下位，3～8室，每室一胚珠。淡褐色菱形果实，长约5毫米，有4～5角，花萼宿存。

Tetragonia tetragonioides (previously T. expansa) is a leafy groundcover also known as Botany Bay spinach, Cook's cabbage, kōkihi (in Māori), New Zealand spinach, sea spinach, and tetragon. Its Australian names of warrigal greens and warrigal cabbage come from the local use of warrigal to describe plants that are wild (not farmed originally). It is native to Argentina, Australia, Chile, Japan, and New Zealand.