1 January – The Seven Network introduces a new logo to celebrate the 2000 Sydney Olympics, the first one not to have the 7 inside a circle.
February – Popstars becomes the first Australian reality talent show, earns massive ratings for the Seven Network & leads to Bardot, the end product of the show, becoming the first Australian act to debut at no.1 on the ARIA charts,
September – The Sydney Olympics earn record ratings for Channel 7 with the Olympic Opening & Closing Ceremonies & its continuous coverage.
19 December – The Seven Network loses the TV rights to the AFL for the first time since televised football began in 1957. The rights are won by a Nine Network-Network Ten-Foxtel consortium.
24 February – First day of the Australian Track & Field Championships for the 1999–2000 season, which are held at the Stadium Australia in Sydney. The 10,000 metres was conducted at the Melbourne Grand Prix on 2 March 2000.
11 June – Wollongong Wolves come from 3–0 behind at half-time to defeat Perth Glory and win the NSL Grand Final on penalties after the game finished 3–3. The attendance at Subiaco Oval was 43,242, the record attendance in Australian domestic football history until broken in 2006.
15 July – Essendon becomes the first VFL/AFL team to begin a season with nineteen consecutive wins, beating Collingwood's record from 1929.
2 August – Essendon becomes the first team to finish with a 21-1 record; a feat subsequently equalled by Geelong in 2008.
2 September – Essendon (19.21.135) defeats Melbourne (11.9.75) to win the 104th VFL/AFL premiership. It is the last occasion until 2010 that the grand final has been an all-Melbourne affair and the last occasion until 2008 that the grand final has been an all-Victorian affair.