Miminegash Harbour is a small harbour and marina situated on Prince Edward Island's northwest coast, near the rural community of Miminegash, roughly 13 km northwest of Alberton.

The harbour sits at approximately 46° 52' 47" N, 64° 13' 48" W and serves both commercial and recreational boaters.

The area is closely tied to the local Irish Moss harvesting industry, and visitors to the harbour may witness harvesters gathering seaweed along the shore using horse-drawn carts — a tradition that continues today.

The nearby Irish Moss Interpretive Centre tells the story of this distinctive coastal industry. Striped bass is the most commonly targeted species by anglers fishing the harbour waters.