List of highways numbered 378

The following highways are numbered 378:

Canada

• Saskatchewan Highway 378

Japan

• File:Japanese National Route Sign 0378.svg Japan National Route 378

United States

• File:I-378 (PA 1957).svg Interstate 378 (former)
• File:US 378.svg U.S. Route 378
• File:Georgia 378.svg Georgia State Route 378
• File:Louisiana 378.svg Louisiana Highway 378
• File:MD Route 378.svg Maryland Route 378 (unsigned)
• File:Nevada 378.svg Nevada State Route 378 (former)
• File:New Mexico 378.svg New Mexico State Road 378
• File:NY-378.svg New York State Route 378
• File:OH-378.svg Ohio State Route 378
• File:PA-378.svg Pennsylvania Route 378
• File:Ellipse sign 378.svg Puerto Rico Highway 378
• File:Virginia 378.png Virginia State Route 378

Preceded by 377

Lists of highways 378

Succeeded by 379