•
Bottom (valley), the floor of a valley •
List of geographical bottoms, list of geographical features called "bottom" •
Bottomland (freshwater ecology), low-lying alluvial land adjacent to a river •
Foggy Bottom, a neighborhood in Washington, D.C. •
Lower Bottoms, Oakland, California or The Bottoms, a neighborhood in Oakland, California, U.S. • St. Paul's Bottoms or The Bottoms, a neighborhood in
Shreveport, Louisiana •
Seabed, the floor of the ocean or ocean bottom •
Stream bed, the channel bottom of a stream, river or creek •
The Bottom, capital of the island of Saba •
The Bottom (neighborhood in Dallas, Texas), a neighborhood in the Tenth Street Freedman's Town in Dallas, Texas, U.S. • The Bottom, a neighborhood in
Knoxville, Tennessee, U.S. • The Bottoms, a neighborhood in
Franklinton (Columbus, Ohio), U.S. == Mathematics ==