Jan Havickszoon Steen (c. 1626 – buried 3 February 1679) was a Dutch Golden Age painter, one of the leading genre painters of the 17th century. His works are known for their psychological insight, sense of humour and abundance of colour. Their satire also mocks the behavior and attitudes of the Dutch bourgeoisie.

Steen was born in Leiden, a town in Southern Holland, where his well-to-do, Catholic family were brewers who ran the tavern The Red Halbert for two generations. Steen's father even leased him a brewery of his own in Delft from the years 1654 until 1657. He was the eldest of eight or more children. Like his even more famous contemporary Rembrandt van Rijn, Jan Steen attended the Latin school and became a student in Leiden. Though no official records of Steen's artistic training are preserved, contemporary sources tell us he received his painterly education from three men, Nicolaes Knupfer (1603–1660), a German painter of historical and figurative scenes in Utrecht, Adriaen van Ostade, and Jan van Goyen, who would later become his father-in-law. Influences of Knupfer can be found in Steen's use of composition and colour. Another source of inspiration was Isaac van Ostade, a painter of rural scenes, who lived in Haarlem.

In 1648 Jan Steen and Gabriël Metsu founded the painters' Guild of Saint Luke at Leiden. Soon after he became an assistant to the renowned landscape painter Jan van Goyen (1596–1656), and moved into his house on the Bierkade in The Hague. On 3 October 1649, he married van Goyen's daughter Margriet, with whom he would have eight children. Steen worked with his father-in-law until 1654, when he moved to Delft, where he ran the brewery De Slang ("The Snake") for three years without much success. After the explosion in Delft in 1654 the art market was depressed, but Steen painted A Burgomaster of Delft and his daughter. It does not seem to be clear if this painting should be called a portrait or a genre work.

Steen lived in Warmond, just north of Leiden, from 1656 until 1660 and in Haarlem from 1660 until 1670 and in both periods he was especially productive. In 1670, after the death of his wife in 1669 and his father in 1670, Steen moved back to Leiden, where he stayed the rest of his life. When the art market collapsed in 1672, called the Year of Disaster, Steen opened a tavern. In April 1673 he married Maria van Egmont, who gave him another child. In 1674 he became president of the Saint Luke's Guild. Frans van Mieris (1635–1681) became one of his drinking companions. He died in Leiden in 1679 and was interred in a family grave in the Pieterskerk.

In 1945, Sturla Gudlaugsson, a specialist in Dutch seventeenth-century painting and iconography and Director of the Netherlands Institute for Art History and the Mauritshuis in The Hague, wrote The Comedians in the work of Jan Steen and his Contemporaries, which revealed that a major influence on Jan Steen's work was the guild of the Rhetoricians or Rederijkers and their theatrical endeavors.

It is often suggested that Jan Steen's paintings are a realistic portrayal of Dutch 17th-century life. However, not everything he did was a purely realistic representation of his day-to-day environment. Many of his scenes contain idyllic and bucolic fantasies and a declamatory emphasis redolent of theater.

Jan Steen's connection to theater is easily verifiable through his connection to the Rederijkers. There are two kinds of evidence for this connection. First, Jan Steen's uncle belonged to the Rhetoricians in Leiden, where Steen was born and lived a substantial part of his life. Second, Jan Steen portrayed many scenes from the lives of the Rederijkers, an example being the painting Rhetoricians at a Window of 1658–1665. The piece is currently held in the Philadelphia Museum of Art which was established in February 1876. The humanity, humour and optimism of the figures suggest that Jan Steen knew these men well, and wanted to portray them positively.

With his lavish and moralising style, it is logical that Steen would employ the stratagems from theater for his purposes. There is conclusive evidence that the characters in Steen's paintings are predominantly theatrical characters and not ones from reality.