Peter Tyndall Walwyn, MBE (1 July 1933 – 7 December 2017) was a British racehorse trainer.
He was based at stables in the Lambourn, Berkshire, area and enjoyed his period of greatest success in the mid-1970s when he was British flat racing Champion Trainer twice.
He then held the licence for Helen Johnson Houghton, twin sister to Fulke Walwyn (women were not recognised as licensed trainers by the Jockey Club in those days).
In October 1960 he took out a licence to train and in 1965 he moved to the stables at Seven Barrows where he spent the majority of his career.
[1] Walwyn was appointed Member of the Order of the British Empire (MBE) in the 2012 New Year Honours for services to horseracing.