Thomas Elder Barr Smith (8 December 1863 – 26 November 1941)[1] was a South Australian pastoralist and philanthropist.

[1] On 5 May 1886 he married Mary Isabel Mitchell, at St Andrew's Church, Walkerville.

In 1917, Barr Smith subdivided his estate, which became the Adelaide suburb of Torrens Park.

In 1928 he gave £30,000 to the University of Adelaide to enable the building of the Barr Smith Library.

A steam locomotive, now preserved in the National Railway Museum, Port Adelaide, was named after him in 1926.