The state of Iowa has adopted numerous symbols through the state legislature. These symbols are listed in the Iowa Official Register.
| width=10% | Type | width=15% | Symbol | width=50% class=unsortable | Notes | width=8% | Adopted | width=14% class=unsortable | Image |
|---|---|---|---|---|---|---|---|---|---|
| Bird | American Goldfinch | Spinus tristis (synonym: Carduelis tristis) | 1933 | ||||||
| Flag | Flag of Iowa | Specified in Iowa Code - Title I Chapter IB | 1921 | ||||||
| Flower | Wild Rose | No one species is established by the legislature, but the wild prairie rose (Rosa arkansana — synonym: Rosa pratincola) is most often used. | 1897 | ||||||
| Rock | Geode | 1967 | |||||||
| Seal | Seal of Iowa | Includes the state motto: "Our liberties we prize, and our rights we will maintain.", specified in Iowa Code - Title I Chapter IA | 1847 | ||||||
| Song | "The Song of Iowa" | by S. H. M. Byers | |||||||
| Tree | Oak | No species or variety designated | 1961 |