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| 1999 Super 12 | |||
|---|---|---|---|
 McDonald's Super 12 rugby ball, 1999 | |||
| Countries |  Australia South Africa New Zealand | ||
| Tournament format(s) | Round-robin and knockout | ||
| Champions | Canterbury Crusaders (2nd title) | ||
| Matches played | 69 | ||
| Top point scorer(s) | Andrew Mehrtens (192) (Canterbury Crusaders) | ||
| Top try scorer(s) | Joe Roff (8) (ACT Brumbies) | ||
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The 1999 Super 12 season was the fourth season of the Super 12, an annual rugby union competition contested by teams from Australia, New Zealand and South Africa. The season ran from February to May 1999, with each team playing all the others once. At the end of the regular season, the top four teams entered the playoff semi-finals, with the first placed team playing the fourth and the second placed team playing the third. The winner of each semi-final qualified for the final, which was contested by the Canterbury Crusaders and the Otago Highlanders at Carisbrook, Dunedin. The Crusaders won 24–19 to win their second Super 12 title.