South Bay may refer to:
In the United States:
- South Bay (San Francisco Bay Area), subregion of the San Francisco Bay Area
- South Bay, Los Angeles, region of Los Angeles County
- South Bay, former name of Fields Landing, California
- South Bay, San Diego, region of San Diego County
- South Bay, Florida, city in Florida
- South Bay (Boston), filled-in former bay in Boston, Massachusetts
- South Bay, Boston, planned development in Boston, Massachusetts
- South Bay (Texas), bay in the Laguna Madre in Texas separated from the Gulf of Mexico by Brazos Island
- Great South Bay on Long Island, New York
In the People's Republic of China:
- South Bay, Hong Kong
- Nam Wan on Tsing Yi Island, Hong Kong ("Nam Wan" literally means South Bay)
- Tai Nam Wan on Tsing Yi Island, Hong Kong ("Tai Nam Wan" literally means Great South Bay)
- Nam Van on the Macau Peninsula, an artificial lake ("Nam Van" literally means South Bay)
In Canada:
- South Bay (Nunavut)
In Antarctica:
- South Bay (Doumer Island)
- South Bay (Livingston Island)
Famous quotes containing the words south and/or bay:
“During Prohibition days, when South Carolina was actively advertising the iodine content of its vegetables, the Hell Hole brand of ‘liquid corn’ was notorious with its waggish slogan: ‘Not a Goiter in a Gallon.’”
—Administration in the State of Sout, U.S. public relief program (1935-1943)
“Baltimore lay very near the immense protein factory of Chesapeake Bay, and out of the bay it ate divinely. I well recall the time when prime hard crabs of the channel species, blue in color, at least eight inches in length along the shell, and with snow-white meat almost as firm as soap, were hawked in Hollins Street of Summer mornings at ten cents a dozen.”
—H.L. (Henry Lewis)