The 1980 NBL season was the 2nd season of the National Basketball League (NBL).

Off-Season Changes

Regular season

The 1980 regular season took place over 18 rounds between 2 February 1980 and 8 June 1980. Each team played 22 games, against every opponent twice.

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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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. ''1Head-to-Head between St. Kilda Saints and West Adelaide Bearcats (1-1). St. Kilda Saints won For and Against (+8).'' 2Illawarra Hawks won Head-to-Head (2-0). ''3Head-to-Head between Coburg Giants and City of Sydney Astronauts (1-1). Coburg Giants won For and Against (+22).''

Finals

The NBL finals series in 1980 consisted of two semifinal games, and one championship-deciding grand final. All three of these finals games were sudden death.

Playoff bracket

Semifinals

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Grand Final

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Awards

Statistics leaders

Regular season

Finals