北瓜可以指：

1. 西葫芦，葫芦科南瓜属植物，通常指称为玉瓜。
2. 笋瓜，葫芦科南瓜属植物，通常指称为北瓜。

Cucurbita pepo is a cultivated plant of the genus Cucurbita. It yields varieties of winter squash and pumpkin, but the most widespread varieties belong to Cucurbita pepo subsp. pepo, called summer squash.

It has been domesticated in the New World for thousands of years. Some authors maintain that C. pepo is derived from C. texana, while others suggest that C. texana is merely feral C. pepo. They have a wide variety of uses, especially as a food source and for medical conditions. C. pepo seems to more closely related to C. fraterna, though disagreements exist about the exact nature of that connection, too.