Potato futures for June declined by Rs 8.30, or 0.81%, to Rs 1,017.10 per quintal in 65 lots.
At the Multi Commodity Exchange (MCX), the May contract eased by Rs 7.20, or 0.70%, to Rs 1,018 per quintal in 49 lots.
Prices fell as speculators offloaded their positions tracking weak spot market trend on subdued demand against increased supplies from producing regions.