Brigadier Austin Henry Williams (11 February 1890 – 5 September 1973) was a British polo champion and officer in the Indian Army.
He was educated at Felsted School and the Royal Military College, Sandhurst, from where he was commissioned a second lieutenant on the Unattached List for the Indian Army on 8 September 1909.
After a year attached to a British regiment he was appointed to the Indian Army and the 38th Central India Horse on 4 December 1910.
He served with his regiment in France and Palestine, being appointed Adjutant in April 1916 and promoted Captain in July 1916, until he was sent back to India in August 1918.
Before his transfer to the 16th Light Cavalry in 1933 at various times he served as an instructor at the Equitation School at Saugor and Military Advisor to Jodhpur State.