Southwest is the ordinal direction halfway between south and west, the opposite of northeast.

Southwest or south west may also refer to:

• The Southwest United States
• Southwest China
• Southwest, Western Australia
• Southwest Airlines, a domestic United States airline
• The Southwest Biosphere Reserve in Australia; see List of Biosphere Reserves in Australia
• Southwest Conference, the NCAA college football conference
• Southwest England, principally the counties of Dorset, Somerset, Devon and Cornwall
• Southwestern University School of Law, one of the oldest law schools in California
• Southwestern University, a private university located in Georgetown, Texas
• UT Southwestern Medical School, a prestigious medical school located in Dallas, Texas
• Southwestern Art is a style of art prevalent in the desert Southwest of the United States, particularly centered in Santa Fe, New Mexico

Orientation

Sydvest | Südwest | Lounas (ilmansuunta) | Południowy zachód | Sudoeste | Југозапад