Pieter van Avont or Peter van Avont, was a Flemish painter, draughtsman and printmaker known for his religious scenes and cabinet paintings often including nude children and putti. Van Avont was a frequent collaborator with many leading painters in Antwerp.

Pieter van Avont was baptized on 14 January 1600 in Mechelen His parents were the sculptor Hans van Avont and Anna le Febure.

It is not known with which master he studied but it is believed he received his first training from his father. He was accepted as a master of the guild of Mechelen in 1620. He moved to Antwerp two years later. Around 1622/3, he was accepted as master of the Guild of Saint Luke in Antwerp and he became a citizen of that city in 1631.

On 2 August 1622 he married Catherine van Hertsen in Antwerp cathedral, although they lived in the parish of St. James Church.

Pieter van Avont likely received commissions from Archduke Leopold William, Governor of the Southern Netherlands, as the Archduke is known to have owned a landscape with the Virgin and Child with Angels by van Avont. Even so, Pieter van Avont was not able to live off his art and operated a side business as a dealer in paintings and prints. He was appointed captain of the local schutterij (civil militia) in 1633 but he resigned from the position in 1639 giving as the reason the need for him to paint in order to sustain his family. His first wife died on 3 September 1643. On 7 February 1644 van Avont married a second time. His second wife was Catharina 't Kint and they had five children.

From the baptisms of his children and of his friends' children it is possible to get an idea of the circle of artistic friends of van Avont. The godfathers and godmothers to his children included the painters Melchior Teniers and Frans Wouters. Catharina 't Kint was the godmother of Marie-Anne Hollar, the daughter of the printmaker Wenceslas Hollar en Margaretha Straci. Wenceslas Hollar is known to have made a portrait of his friend van Avont.

His financial position deteriorated after his second marriage and he had to sell the seven houses he owned and mortgage his residence. His children were sickly and seven of them died before the artist. He spent a lot of money on medical bills. He moved to rural Deurne near Antwerp in order to provide for a healthier environment for his children. He died in 1652 soon after moving his family there and was buried on 1 November 1652.

Peeter van den Cruys was a pupil of van Avont in 1625-'26. Frans Wouters was apprenticed to Pieter van Avont in 1629 but Wouters broke his contract to move to the workshop of Rubens in 1634. Frans Wouters' brother Pieter was van Avont's pupil in 1631–32.