Johanna van Polanen (also spelled as Jehenne; 10 January 1392 – 15 May 1445) was a Dutch noblewoman.

[1][2] She was the daughter of John III of Polanen, Lord of Breda, and his wife, Odilia of Salm.

They had six children: Johanna inherited many Lordship, Heerlijkheden and manors in Holland, Brabant, Hainaut, Utrecht, Zeeland.

Through her inheritance, the House of Nassau became one of the wealthiest and most influential noble families in the Burgundian Netherlands.

Johanna died in 1445 in Breda, where she was buried in the mausoleum constructed for her husband in the Church of Our Lady (Grote Kerk) at the Market Square.