The 1969–70 Plunket Shield season was a tournament of the Plunket Shield, the domestic first-class cricket competition of New Zealand.

Otago 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.

[1] The match between Otago and Northern Districts was rained off before both teams could complete one innings each resulting in both teams gaining three competition points.

[2] Below are the Plunket Shield standings for the season:[1]

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