Slytherin House

Slytherin House is one of the four houses into which students are Sorted when they start their first year at Hogwarts. Slytherin House was founded by Salazar Slytherin around 990AD. His personal belief in the superiority of Pure Blood wizards still influences the attitudes of Slytherin members today.

Head: Professor Severus Snape until spring of 1997, then Horace Slughorn.
Founder: Salazar Slytherin.
Blazon: vert, a serpent argent (that is, a silver serpent on a green field, hence the Slytherin colours of green and silver) (PA15, GF15). The serpent device signifies the founder’s gift of being a Parselmouth (CS11).
Ghost: The Bloody Baron (PS7).
Location: The Slytherin common room is a low-ceilinged, dungeon-like room with greenish lamps and chairs, with skulls all around. It is located under the lake, and has tapestries decorated with scenes from the lives of famous Slytherins (DH23, Pm). According to the Slytherin House Introduction Letter, the beds in the dormitories are four-posters with green silk hangings and covers embroidered with silver threads. You can hear the soothing sound of the lake lapping against the windows at night (Pm)

Sorting Hat description: (PS7)

Or perhaps in Slytherin
You’ll make your real friends
Those cunning folk use any means
To achieve their ends.

Slytherin Quidditch team
green robes
players chosen more for size than finesse or skill, it seems
all fly on Nimbus 2001s
the 1991-92 team included no girls

Known Slytherins, past and present

For each known Slytherin below, his or her name is given together with the years he or she was a student in Slytherin. See the individual students' entries for more detailed information (such as the references for how we know that they're Slytherins and what years they were in).

Note: Sirius Black says that everyone in the Black Family was in Slytherin except himself (DH33). While Slughorn tells Harry that he "had them all" meaning the Blacks in Slytherin House (DH4), there might be a few variations, so not all of them are listed here. Andromeda is included because she wasn't that much older than Sirius and Slughorn didn't exclude her.

(unknown, but roughly contemporary with the Founders)

• The Bloody Baron (c. 1000)
• Merlin "Prince of Enchanters" (c. 1000)

(years unknown, 18th century)

• Corvinus Gaunt (Pm)

(years unknown, but possibly 19th century)

• Slughorn, Horace

1858-1866

• Black, Phineas Nigellus

Early 20th Century

• Abraxas Malfoy (Draco's Grandfather)

(1936 - 1943) (or is it 1938?)

• Avery (Riddle's contemporary)
• Nott Sr.
• Mulciber (possible Sr.)
• Riddle, Tom Marvolo became Lord Voldemort

(Unknown, mid-20th-century)

• Dolores Umbridge

(c. 1960s - 1970s)

• Lestrange, Rodolphus (c. 1960s)
• Lestrange, Rabastan (c. 1960s)
• Black, Andromeda (c. 1960s)
• Black, Bellatrix (c. 1962 - 1968)
• Black, Narcissa (c. 1965 - 1972)
• Malfoy, Lucius (1965 - 1972)
• Avery (Snape's contemporary)
• Mulciber (Snape's contemporary)
• Rosier, Evan (c. 1970s)
• Snape, Severus (1971 - 1978)
• Wilkes (c. 1970s)
• Black, Regulus (c. 1972 - 1979)

(1990s)

• Bletchley, Miles
• Higgs, Terence
  At least a year ahead of Harry, since he played Seeker in Harry's first year.
• Urquhart (HBP14)
  No more than a year older than Harry, since he was on the team in Harry's sixth year. May be younger than Harry.
• Vaisey (HBP14)
  No more than a year older than Harry, since he was on the team in Harry's sixth year. May be younger than Harry.

1986 - 1994

• Flint, Marcus
  Repeated a year without being kicked off the team, so actually left Hogwarts at the end of Harry's third year rather than his second. This error was fixed in later editions of the books.

1988 - 1995

• Bole
• Derrick

1989 - 1996

• Montague
• Pucey, Adrian
• Warrington, C. (c.1989 - 1996)

1991 - 1998

• Bulstrode, Millicent
• Crabbe, Vincent
• Davis, Tracey (witch) (HPM)
• Goyle, Gregory
• Greengrass, Daphne (HPM, OP31)
• Malfoy, Draco
• Nott, Theodore
• Parkinson, Pansy
• Zabini, Blaise

1992 - 1999

• Harper (male)

1993 - 1994

• Astoria Greengrass (first name uncertain, could be Asteria, sister to Daphne) (JKR)

1994 - 2001

• Baddock, Malcolm
• Pritchard, Graham

2017

• Albus Severus Potter
• Scorpius Malfoy