List of lands protected by Theodore Roosevelt through executive action

Below is a list of lands set aside as national parks, reserves, or other conservatories by President Theodore Roosevelt via executive order or proclamation. During his presidency, Roosevelt issued nearly 10 times more executive orders than his predecessor. Many lands started out as preserves, but were expanded by later presidents and made into national forests.

A cornerstone of his actions focused on the issue of conservation, and Roosevelt set aside more national parks and nature preserves than all of his predecessors combined. At the time, Roosevelt's executive action was controversial, and many of his actions were brought before a court.

As early as 1892, in his book The Wilderness Hunter, Theodore Roosevelt was calling for the state to take command of wilderness lands.