Sanguine can refer to:
- Sanguine personality - optimistic, cheerful, even-tempered, confident, rational, popular, fun-loving
- Sanguine is the temperament of blood - one of the four humours
- Sanguine is a tincture in heraldry, otherwise one of the "staynard colours" (stains). It is a brownish red, the colour of blood.
- Sanguine was also an ELF antenna of the US Navy; see communication with submarines, Sanguine (transmitter)
- Sanguine - a drawing done in reddish chalk, particularly an Old Master drawing.
- Sanguine - a red earth pigment used in the manufacture of artists chalks or pastels. First used by Renaissance artists. Still used by manufacturers such as Conté; to name reddish-brown chalks, coloured with Iron Oxide.
See also: choleric, phlegmatic, melancholic.
