Category:Nature reserves in the United States by state

• Botanical gardens in the United States by state (51 C)
• National Wildlife Refuges of the United States by state (50 C)
• Wilderness areas of the United States by state (40 C)
• Wildlife management areas of the United States by state (21 C)

A

• Nature reserves in Alabama (4 C, 8 P)
• Nature reserves in Alaska (3 C, 6 P)
• Nature reserves in Arizona (3 C, 7 P)
• Nature reserves in Arkansas (4 C)

C

• Nature reserves in California (5 C, 134 P)
• Nature reserves in Colorado (4 C, 10 P)
• Nature reserves in Connecticut (6 C, 17 P)

D

• Nature reserves in Delaware (2 C)

F

• Nature reserves in Florida (7 C, 50 P)

G

• Nature reserves in Georgia (U.S. state) (3 C, 10 P)

H

• Nature reserves in Hawaii (3 C, 14 P)

I

• Nature reserves in Idaho (3 C)
• Nature reserves in Illinois (4 C, 38 P)
• Nature reserves in Indiana (3 C, 13 P)
• Nature reserves in Iowa (3 C, 3 P)

K

• Nature reserves in Kansas (2 C, 6 P)
• Nature reserves in Kentucky (3 C, 11 P)

L

• Nature reserves in Louisiana (3 C, 5 P)

M

• Nature reserves in Maine (4 C, 3 P)
• Nature reserves in Maryland (3 C, 12 P)
• Nature reserves in Massachusetts (3 C, 4 P)
• Nature reserves in Michigan (3 C, 23 P)
• Nature reserves in Minnesota (3 C, 4 P)
• Nature reserves in Mississippi (4 C, 4 P)
• Nature reserves in Missouri (3 C, 4 P)
• Nature reserves in Montana (5 C, 7 P)

N

• Nature reserves in Nebraska (3 C, 6 P)
• Nature reserves in Nevada (4 C)
• Nature reserves in New Hampshire (3 C, 8 P)
• Nature reserves in New Jersey (3 C, 29 P)
• Nature reserves in New Mexico (3 C, 5 P)
• Nature reserves in New York (state) (5 C, 51 P)
• Nature reserves in North Carolina (3 C, 9 P)
• Nature reserves in North Dakota (3 C)

O

• Nature reserves in Ohio (3 C, 21 P)
• Nature reserves in Oklahoma (3 C, 3 P)
• Nature reserves in Oregon (4 C, 12 P)

P

• Nature reserves in Pennsylvania (4 C, 13 P)

R

• Nature reserves in Rhode Island (2 C, 8 P)

S

• Nature reserves in South Carolina (4 C, 7 P)
• Nature reserves in South Dakota (3 C)

T

• Nature reserves in Tennessee (3 C, 11 P)
• Nature reserves in Texas (4 C, 22 P)

U

• Nature reserves in Utah (3 C)

V

• Nature reserves in Vermont (3 C, 4 P)
• Nature reserves in Virginia (5 C, 5 P)

W

• Nature reserves in Washington (state) (4 C, 10 P)
• Nature reserves in West Virginia (4 C, 5 P)
• Nature reserves in Wisconsin (4 C, 3 P)
• Nature reserves in Wyoming (3 C, 1 P)