Euphorbia milii
- Common name(s): Crown of Thorns, Christ Plant, Christ Thorn
- Blooming time: the year round
- Blooming colors: yellow, red, white, multicolored
- Height: up to 1,5 m
- Origin: Madagascar
- Hardiness zone (USDA): Z12 – up to 12 °C
- Family: Euphorbiaceae