The 1970–71 Plunket Shield season was a tournament of the Plunket Shield, the domestic first-class cricket competition of New Zealand.

Central Districts won the championship, finishing at the top of the points table at the end of the round-robin tournament between the six first-class sides, Auckland, Canterbury, Central Districts, Northern Districts, Otago, and Wellington. A new bonus point system was introduced, with one bonus point for every 25 runs over 150 and for every 2 wickets taken (in the first 65 overs only) with points for draws no longer being awarded.

Table Below are the Plunket Shield standings for the season: Team Played Won Lost Drawn Abandoned Bonus points Points Net BattingBowling Central Districts 5 3 0 1 1 8 16 54 9.203 Wellington 5 2 1 2 0 12 19 51 7.363 Auckland 5 2 1 2 0 16 13 49 9.909 Canterbury 5 1 2 2 0 8 13 31 0.257 Otago 5 1 3 1 0 3 17 30 −3.135 Northern Districts 5 1 3 0 1 5 12 27 −20.597

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