Today Tonight was an Australian current affairs television program produced by the Seven Network. It aired from January 1995 to November 2019 in Adelaide and Perth. Editions in Brisbane, Sydney and Melbourne were previously produced before being cancelled in February 2014.

Following the cancellation of Real Life, presented by Stan Grant late in 1994, Today Tonight was launched in January 1995 to replace it, with separate editions for each main metropolitan market (Sydney, Melbourne, Brisbane, Adelaide and Perth).

Over summer, it was usual for Today Tonight to present a single edition broadcast across the entire east coast of Australia (that is, combining Sydney, Melbourne, and Brisbane).

Today Tonight nationally was the last program to win the Logie for Most Popular Public Affairs Program before that award was discontinued.

The South Australian edition was hosted by Rosanna Mangiarelli.

Since the program's inception in South Australia in 1995 until 2007, Leigh McClusky fronted the South Australian edition of the program, only taking leave over summer and to give birth to her son in 2002 (John Riddell filled in) and to have a daughter in 2006 (Rosanna Mangiarelli filled in). When the program first started, it rated 100,000 behind its competitor, A Current Affair, although ratings steadily increased. In 2001, Today Tonight began outrating A Current Affair in what became a 4-year winning streak.

McClusky announced on 6 February 2007, she would leave the programme to have twins, and would not return. She presented her last show on 17 August 2007. Rosanna Mangiarelli began as presenter on 20 August 2007 after several years as substitute presenter.

On 1 October 2007, the South Australian edition of the program began airing in regional South Australia, after WIN Television changed their affiliation in the state from the Nine Network to the Seven Network.