Scorpio (♏) is the eighth astrological sign in the Zodiac, originating from the constellation of Scorpius. It spans 210°–240° ecliptic longitude. Under the tropical zodiac (most commonly used in Western astrology), the Sun transits this sign on average from October 23 to November 22.^[2] Under the sidereal zodiac (most commonly used in Hindu astrology), the Sun is in Scorpio from approximately November 16 to December 15.^[3] Depending on which zodiac system one uses, an individual born under the influence of Scorpio may be called a Scorpio or a Scorpion.^[4]

Scorpio is one of the three water signs, the others being Cancer and Pisces.^[5] It is a fixed, negative sign.^[6] In ancient times, Scorpio was associated with the planet Mars. After Pluto was discovered in 1930, it became associated with Scorpio instead.^[6][7] Scorpio is associated with three different animals: the scorpion, the snake, and the eagle (or phoenix). The snake and eagle are related to the nearby constellations of Ophiuchus and Aquila.^[6] Scorpio is also associated with the Greek deity Artemis, who is said to have created the constellation Scorpius.^[6] Scorpio's colors are deep red, maroon, brown and black.^[8]