John I, Lord of Polanen ( – 26 September 1342) was Lord of Polanen, Lord of De Lek and Lord of Breda.
Life
John was a son of Philips III van Duivenvoorde (?-c. 1308) and Elisabeth van Vianen.
Lord of Polanen
Upon the death of his father, John I became Lord of Polanen Castle. In his early years, John got help from his uncle Diederik van der Wale.
Lord of Heemskerk
In 1327 John bought Oud Haerlem Castle and the lordships () of Heemskerk and Castricum. The price was only 100 pounds.
In 1328 John took part in the Battle of Cassel, and in 1329 he was knighted. In 1339 he became bailiff of Kennemerland
Lord of Breda
In 1322 John married Catharina van Van Brederode (died 1372). He was the father of John II, Lord of Polanen.