Spinach (Spinacia oleracea) is an edible flowering plant in the family of Amaranthaceae.

Spinach may also refer to:

Botany Amaranthus dubius, known as red spinach or Chinese spinach Atriplex hortensis, known as mountain spinach or French spinach Basella alba, known as Malabar spinach, red vine spinach, creeping spinach or climbing spinach Chard (Beta vulgaris), also known as spinach beet, silverbeet or perpetual spinach Chenopodium bonus-henricus, also known as Lincolnshire spinach Cleome serrulata, known as Navajo spinach Ipomoea aquatica, known as water spinach, river spinach or Chinese spinach Morogo, or African spinach, referring to a group of at least three different dark green leafy vegetables Rumex acetosa, also known as spinach dock Tetragonia tetragonioides, known as New Zealand spinach or sea spinach

Other uses Spinach (moth) (Eulithis mellinata), a moth of the family Geometridae Spinach aptamer, a synthetic RNA aptamer designed as a mimic of green fluorescent protein Spinach (software), magnetic resonance simulation software

See also Chinese spinach (disambiguation) Wild spinach