Hogweed is a common name for several unrelated plants.
Hogweed may refer to:
- Heracleum, a genus in the carrot family containing several plants often called hogweed, including:
- Heracleum sphondylium, the common hogweed
- Heracleum mantegazzianum, the giant hogweed
- Heracleum sosnowskyi, Sosnowsky's hogweed
- Heracleum persicum, Persian hogweed
- Boerhavia, a genus in the four o'clock flower family containing species sometimes called hogweed
- Zaleya galericulata, a species in the iceplant family, formerly in the genus Trianthema