1980–81 Australia Tri-Nation Series

1980–81 World Series
Date23 November 1980 – 3 February 1981
LocationAustralia
ResultWon by  Australia
3–1 in final series
Teams
 Australia  India  New Zealand
Captains
Greg Chappell Sunil Gavaskar Geoff Howarth
Most runs
Greg Chappell (686) Dilip Vengsarkar (221) John Wright (511)
Most wickets
Dennis Lillee (25) Dilip Doshi (15) Martin Snedden (17)

The 1980–81 Australia Tri-Nation Series (more commonly known as the 1980–81 World Series) was a cricket tournament held in Australia from 23 November 1980 to 3 February 1981. It was the second edition of the Australian Tri-Series, with Australia playing host to India and New Zealand. The series was a part of the Indian and New Zealand tours.

After matches were played in Adelaide, Brisbane, Melbourne, Sydney and Perth throughout the entire group-stage, Australia and New Zealand qualified for the finals where after the underarm incident in the third final, Australia went on to win 3–1.