Debora van der Plas (1616–1680) was a Dutch born, Swedish entrepreneur.
Around 1620, Laurens van der Plas leased the manor Axbergshammars Bruk in Närke.
[1] In 1644, she married Jan van Ruyff, a merchant and leading member of the Dutch colony in Stockholm.
[2] [3] [4] After the death of her spouse in 1658, she took control over his business and became one of Sweden's most notable skippers and exporters of iron and copper.
She retired for health reasons in 1672 and left control of the company to her son-in-law Henrik Cletcher (1632-1695), husband of her daughter, Gertrud Maria Charlotta Cletzer (b. circa 1645).