Isaac van Duynen (c. 1628 – c. 1679) was a Dutch still-life painter of the Golden Age, admired for his rich and meticulously detailed paintings of fish and seafood. Born in Dordrecht, van Duynen was part of a generation of artists who elevated still-life painting to new levels of realism and symbolic depth during the 17th century. Little is known about his early life, but it is believed he may have studied under Jacob Gerritsz Cuyp or Abraham van Beijeren—two influential artists also associated with Dordrecht. Van Duynen later moved to The Hague, where he became a member of the Confrerie Pictura, the city’s painters’ guild, in 1665. Van Duynen specialized in marine still lifes, particularly scenes featuring glistening piles of fish laid out on stone slabs or wooden tables. These works are notable for their lifelike texture, careful composition, and subtle interplay of light and shadow. His ability to render the silvery sheen of fish scales or the moist surfaces of oysters and crustaceans places him among the finest seafood painters of his time. While he did not achieve the fame of some of his contemporaries, van Duynen’s paintings were appreciated by collectors of fine still-life art, and his work reflects the Dutch Golden Age's deep appreciation for natural abundance, trade, and technical skill. He died in The Hague around 1679, leaving behind a small but impressive body of work that continues to be studied and admired for its quiet virtuosity and sumptuous realism.