Nineteen accused witches were hanged on Gallows Hill in 1692:

June 10
Bridget Bishop

July 19
Rebecca Nurse
Sarah Good
Susannah Martin
Elizabeth Howe
Sarah Wildes

August 19
George Burroughs
Martha Carrier
John Willard
George Jacobs, Sr.
John Proctor

September 22
Martha Corey
Mary Eastey
Ann Pudeator
Alice Parker
Mary Parker
Wilmott Redd
Margaret Scott
Samuel Wardwell

One accused witch (or wizard, as male witches were often called) was pressed to death on September 19 when he failed to plead guilty or not guilty:

Giles Corey

Other accused witches died in prison:

Sarah Osborn
Roger Toothaker
Lyndia Dustin
Ann Foster
(As many as thirteen** others may have died in prison.)
**sources conflict as to the exact number of prison deaths

An example of a death warrant:

(Death Warrant for Sarah Good, Rebecca Nurse, Susannah Martin, Elizabeth Howe, and Sarah Wilds)

To Goerge: Corwine Gent'n High Sheriff of the county of Essex

Whereas Sarah Good Wife of William Good of Salem Village Rebecka Nurse wife of Francis Nurse of Salem Village Susanna Martin of Amesbury Widow Elizabeth How wife of James How of Ipswich Sarah Wild wife of John Wild of Topsfield all of the County of Essex in thier Maj'ts Province of the Massachusetts Bay in New England Att A Court of Oyer & Terminer held by Adjournment for Our Severaign Lord & Lady Kind Wiliam & Queen Mary for the said County of Essex at Salem in the s'd County onf the 29th day of June [torn] were Severaly arrigned on Several Indictments for the horrible Crime of Witchcraft by them practised & Committed On Severall persons and pleading not guilty did for thier Tryall put themselves on God & Thier Countrey whereupon they were Each of them found & brought in Guilty by the Jury that passed On them according to their respective Indictments and Sentence of death did then pass upon them as the Law directs Execution whereof yet remains to be done: Those are Therefore in thier Maj'ties name William & Mary now King & Queen over England &ca: to will & Command you that upon Tuesday next being the 19th day for [torn] Instant July between the houres of Eight & [torn] in [torn] forenoon the same day you Safely conduct the s'd Sarah Good Rebecka Nurse Susann Martin Elizabeth Howe & Sarah Wild From thier Maj'ties goal in Salem afores'd to the place of Execution & there Cause them & Every of them to be hanged by the Neck untill they be dead and of the doings herein make return to the Clerke of the said Court & this precept and hereof you are not to fail at your perill and this Shall be your sufficient Warrant given under my hand & seale at Boston th 12't day of July in the fourth year of Reign of our Soveraigne Lord & Layd Wm & Mary King and Queen &ca:

*Wm Stoughton

Annoq Dom. 1692

(Reverse)

Salem July 19th 1692

I caused the within mentioned persons to be Executed according to the Tenour of the with[in] warrant

*George Corwin Sherif