No, you cannot camp anywhere in Rocky Mountain National Park. Camping is only allowed in designated campgrounds and backcountry campsites with a valid permit. The park offers five developed campgrounds: Aspenglen, Glacier Basin, Longs Peak, Moraine Park, and Timber Creek. Reservations are required for most of these campgrounds, while some sites are first-come, first-served.
For backcountry camping, you must obtain a backcountry permit from the park and follow all regulations and guidelines. There are designated backcountry campsites throughout the park, and camping is not allowed outside of these sites.