Nicholas Vaux, 1st Baron Vaux of Harrowden (c. 1460 – 14 May 1523) was a soldier and courtier in England and an early member of the House of Commons. He was the son of Lancastrian loyalists Sir William Vaux of Harrowden and Katherine Penyson (or Peniston as she is sometimes called in later sources), a lady of the household of Queen Margaret of Anjou, wife of the Lancastrian king, Henry VI of England. Katherine was a daughter of Gregorio Panizzone of Courticelle (modern Cortiglione), in Piedmont, Italy which was at that time subject to King René of Anjou, father of Queen Margaret of Anjou, as ruler of Provence. He grew up during the years of Yorkist rule and later served under the founder of the Tudor dynasty, Henry VII.