Thomas Vavasour (1560–1620) was an English soldier, courtier and Member of Parliament.
He came from a family long established in Yorkshire. His grandfather was William Vavasour and his father was Henry Vavasour (died 1584) of Copmanthorpe, Yorkshire. His mother, Margaret, was the daughter of Sir Henry Knyvet (died 1547) of Charlton, Wiltshire. Thomas was educated at Eton and Caius College, Cambridge where he was a fellow commoner.
In 1576 he married Mary, daughter and heiress of John Dodge of Copes[where?], Suffolk, widow of Peter Houghton, alderman of London. They had four sons and two daughters.
He became involved in court scandal and rivalry through the actions of his elder sister, Anne.
He was Member of Elizabethan Parliaments for Wootton Bassett in the 1584 and 1586 parliaments, and member for Malmesbury in the 1589 parliament.
In August 1585 he fought in the Netherlands as captain of foot from Yorkshire, retaining this command until 1591. He distinguished himself on two occasions, once in an attack on a sconce near Arnhem in October 1585, and again in 1587 with Lord Willoughby to fight the Marques del Guasto.
