The following highways are numbered 274:

• Manitoba Provincial Road 274

• Japan National Route 274

• Interstate 274 (future)
• California State Route 274 (former)
• Florida State Road 274 (former)
• Georgia State Route 274
• K-274 (Kansas highway)
• Kentucky Route 274
• Maryland Route 274
• Minnesota State Highway 274
• Montana Secondary Highway 274
• New York State Route 274
• North Carolina Highway 274
• Ohio State Route 274
• Pennsylvania Route 274
• South Carolina Highway 274
• Tennessee State Route 274
• Texas State Highway 274
  • Texas State Highway Loop 274
  • Farm to Market Road 274 (Texas)
• Utah State Route 274
• Virginia State Route 274
• Washington State Route 274