Washingtonian may to refer to people from:

• Washington (state)
  • List of people from Washington (state)
• Washington, D.C.
  • List of people from Washington, D.C.

Washingtonian may also refer to:

• Washingtonian (Amtrak train), a former Amtrak service
• Washingtonian (B&O train), a named passenger train of the Baltimore and Ohio Railroad in the 1930s–1950s
• Washingtonian (magazine), a cultural magazine in Washington, D.C.
• Washingtonian movement, a 19th-century temperance movement in the United States
• "The Washingtonians" (2007), Masters of Horror episode
• SS Washingtonian, a cargo ship launched in 1913
• The Washingtonians, a band formed by Duke Ellington

• Washington (disambiguation)