Edward Rennix "Teddy" Larkin (3 January 1880 – 25 April 1915) was an Australian parliamentarian and a national representative rugby union player.
Larkin was the member for Willoughby in the New South Wales Legislative Assembly from December 1913 until his death.
He served in the First AIF, and was killed in action on the first day of the Gallipoli Campaign.
He was one of only two serving members of any Australian parliament to fall in World War I — the other, who fell at Gallipoli on 4 May 1915, was George Braund, also a New South Wales MLA.