Haverhill (/ˈheɪvrɪl/ HAY-vril) is a city in Essex County, Massachusetts, United States. Haverhill is located 35 miles (56 km) north of Boston on the New Hampshire border and about 17 miles (27 km) from the Atlantic Ocean. The population was 67,787 at the 2020 United States census.

Located on the Merrimack River, Haverhill began as a farming community of Puritans, largely from Newbury Plantation. The land was officially purchased from the Pentuckets on November 15, 1642 (one year after incorporation) for three pounds, ten shillings. Pentucket was renamed Haverhill (after the Ward family's hometown in England) and evolved into an important industrial center, beginning with sawmills and gristmills run by water power. In the 18th and 19th centuries, Haverhill developed woolen mills, tanneries, shipping and shipbuilding. The town was home to a significant shoe-making industry for many decades. By the end of 1913, one tenth of the shoes produced in the United States were made in Haverhill, and because of this the town was known during the time as the "Queen Slipper City".

Haverhill has played a role in nearly every era of American history, from the initial colonial settlement, to the French and Indian Wars, and the American Revolutionary and Civil Wars.

The town was founded in 1640 by settlers from Newbury, and was originally known as Pentucket, which is for "place of the winding river". Settlers such as John Ward, Robert Clements, Tristram Coffin, Hugh Sheratt, William White, and Thomas Davis aided in the purchase of Pentuckett. The land was sold by Passaquo and Saggahew who claimed to have permission from Passaconaway, though nothing more is known of these two figures in the historical record and it is not clear whether they were at liberty to sell the land, or indeed whether they had a shared understanding of what such a contract would entail.

Settlers Thomas Hale, Henry Palmer, Thomas Davis, James Davis and William White were Pentuckett's first selectmen. First Court appointments given to end small causes were given to Robert Clements, Henry Palmer, and Thomas Hale. At the same court, it was John Osgood and Thomas Hale that were also appointed to lay the way from Haverhill to Andover. It is said that these early settlers worshipped under a large oak tree, known as the "Worshipping Oak".

The town was renamed for the English town of Haverhill, Suffolk, in deference to the birthplace of the settlement's first pastor, Rev. John Ward. The original Haverhill settlement was located around the corner of Water Street and Mill Street, near the Linwood Cemetery and Burying Ground. The home of the city's father, William White, still stands, although it was expanded and renovated in the 17th and 18th centuries. White's Corner (Merrimack Street and Main Street) was named for his family, as was the White Fund at Boston's Museum of Fine Arts.

Judge Nathaniel Saltonstall was chosen to preside over the Salem witch trials in the 17th century; however, he found the trials objectionable and recused himself. Historians cite his reluctance to participate in the trials as one of the reasons that the witch hysteria did not take as deep a root in Haverhill as it did in the neighboring town of Andover, which had among the most victims of the trials. However, a number of women from Haverhill were accused of witchcraft, and a few were found "guilty" by the Court of Oyer and Terminer.

One of the initial group of settlers, Tristram Coffin, ran an inn. However, he grew disenchanted with the town's stance against his strong ales, and in 1659 left Haverhill to become one of the founders of the settlement at Nantucket.