Ampelaster is a North American monotypic genus of flowering plants in the family Asteraceae.

There is a single known species, Ampelaster carolinianus, with the common name of climbing aster.

[3] It is native to the southeastern United States, in the States of Florida, Georgia, North Carolina, and South Carolina.

[2] Ampelaster carolinianus is unusual in the family in that it is a climber, using other plants to support its weight.

Flower heads are 1–15 per branch, with both ray florets and disc florets, the flowers pale pink to rose-purple.