Fishing is a popular activity in many U.S. national parks, providing anglers with both freshwater and saltwater opportunities in some of the nation’s most iconic landscapes. Here’s a list of notable national parks in the United States where you can go fishing:

1. Acadia National Park (Maine) – Offers saltwater and freshwater fishing.
2. Everglades National Park (Florida) – Known for its saltwater fishing, especially tarpon, snook, and redfish.
3. Glacier National Park (Montana) – Home to numerous lakes and streams filled with native trout.
4. Grand Teton National Park (Wyoming) – Popular for trout fishing in the Snake River.
5. Great Smoky Mountains National Park (Tennessee/North Carolina) – Trout fishing is prevalent in over 2,900 miles of streams.
6. Isle Royale National Park (Michigan) – Offers lake fishing in Lake Superior.
7. Katmai National Park and Preserve (Alaska) – Famous for salmon fishing and bear watching.
8. Lake Clark National Park and Preserve (Alaska) – Remote and excellent for salmon and trout fishing.
9. Lassen Volcanic National Park (California) – Streams and lakes stocked with trout.
10. Olympic National Park (Washington) – Offers both freshwater and saltwater fishing.
11. Rocky Mountain National Park (Colorado) – Trout fishing in high mountain lakes and streams.
12. Sequoia and Kings Canyon National Parks (California) – High Sierra lakes and streams with trout.
13. Shenandoah National Park (Virginia) – Over 70 mountain streams with brook trout.
14. Voyageurs National Park (Minnesota) – Abundant in lakes for walleye, northern pike, and bass.
15. Yellowstone National Park (Wyoming/Montana/Idaho) – Renowned for fly fishing in rivers and lakes with native cutthroat trout.
16. Yosemite National Park (California) – Offers stream and lake fishing, primarily for rainbow trout.
17. Kenai Fjords National Park (Alaska) – Coastal waters with halibut and salmon.
18. Biscayne National Park (Florida) – Tropical fishing with species like snapper, grouper, and bonefish.
19. Haleakalā National Park (Hawaii) – Limited fishing in the streams.
20. Gateway Arch National Park (Missouri) – Urban fishing in the Mississippi River.

These parks not only provide superb fishing opportunities but also offer breathtaking natural beauty and diverse ecosystems. Remember, regulations and required permits vary by park, so always check the specific park’s rules before you go fishing.