Snowball bush is a common name for several ornamental plants which produce large clusters of white flowers and may refer to:
- Species of Hydrangea, which tend to flower in the summer:
- Species of Viburnum, which tend to flower in the spring:
- Viburnum macrocephalum (Chinese snowball bush)
- Viburnum opulus (European snowball bush)
- Viburnum plicatum (Japanese snowball bush)