The 2004–05 NBL season was the 27th season of competition since its establishment in 1979. A total of 11 teams contested the league, the Victoria Giants has been folded.

Regular season

The 2004-05 regular season took place over 21 rounds between 29 September 2004 and 20 February 2005.

Round 1

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Round 2

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Round 3

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Round 4

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Round 5

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Round 6

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Round 7

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Round 8

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Round 9

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Round 10

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Round 11

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Round 12

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Round 13

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Round 14

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Round 15

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Round 16

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Round 17

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Round 18

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Round 19

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Round 20

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Round 21

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Ladder

The NBL tie-breaker system as outlined in the NBL Rules and Regulations states that in the case of an identical win–loss record, the results in games played between the teams will determine order of seeding. ''1Townsville Crocodiles won Head-to-Head (2-1). '' ''23-way Head-to-Head between Brisbane Bullets (4-2), Melbourne Tigers (3-3) and Perth Wildcats (2-4). '' ''3West Sydney Razorbacks won Head-to-Head (2-1). ''

Finals

Playoff bracket

Elimination Finals

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Semi-finals

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Grand Final

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All Star Game

Most Valuable Player

Awards

All NBL Team

Player of the month

Coach of the month