菥蓂（学名：Thlaspi arvense）为十字花科菥蓂属下的一个种。

菥蓂始载于《神农本草经》。

Thlaspi arvense, known by the common name field pennycress, is a foetid Eurasian plant having round flat pods; naturalized throughout North America. It is also related to the Lepidium genus in the cabbage family.