| Eupatorium hastile S. Schauer, 1847 |
| Eupatorium havanense Kunth, 1818 |
| Eupatorium heathiae B.L. Turner, 1990 |
| Eupatorium hebebotryum (DC.) Hemsl., 1881 |
| Eupatorium hebes B.L. Rob., 1925 |
| Eupatorium hebes var. rasum B.L. Rob., 1925 |
| Eupatorium hederifolium A. Gray, 1848 |
| Eupatorium hemipteropodum B.L. Rob., 1906 |
| Eupatorium herbaceum (A. Gray) Greene, 1901 |
| Eupatorium heterolepis B.L. Rob., 1900 |
| Eupatorium heydeanum B.L. Rob., 1900 |
| Eupatorium hidalgense H. Rob., 1925 |
| Eupatorium hintonii (R.M. King & H. Rob.) B.L. Turner, 1989 |
| Eupatorium hintoniorum B.L. Turner, 1992 |
| Eupatorium holwayanum B.L. Rob., 1906 |
| Eupatorium horminoides (DC.) Baker, 1876 |
| Eupatorium hospitale B.L. Rob., 1907 |
| Eupatorium houstonianum L., 1753 |
| Eupatorium hylobium B.L. Rob., 1904 |
| Eupatorium hylonomum B.L. Rob., 1904 |