Reinoud I van Brederode (English: Raynald) (Santpoort, 1336–1390) was the 6th lord of Brederode.
In 1358 Reinoud was appointed bailiff of Kennemerland by Albert I, count of Holland.
In the same year an assassination attempt was made on him at Castricumerzand.
On 11 November 1377 he succeeded his father as lord of Brederode.
Reinoud married in 1366 with Jolanda van Gennep van der Eem, a daughter of Jan II van Gennep.