In the US, put “The Honorable” on the first line of your address block along with the mayor’s first and last name. For example: The Honorable Megan Barry. On the second line of the address block, provide the city. For example: Mayor of Nashville. In other countries, mayors may have different formal titles. You still generally want to use the mayor’s full formal title on the envelope. For example, in the UK and British commonwealth countries, a mayor’s full formal title is “His/Her Worship Mayor Firstname A. Lastname. " For example: Her Worship Mayor Megan C. Barry. [3] X Research source

For example: Dear Mayor Barry. Follow your salutation with a comma, double space, and continue with your letter. Double-check proper protocol outside the US. For example, in Canada it is also acceptable to use a polite salutation such as “Dear Sir” or “Dear Madam. “[5] X Research source

You might also use Mr. Mayor or Madam Mayor if you want. Be careful not to overdo it when using the mayor’s name in the body of your letter. You might want to use it at the end, when you’re urging the mayor to act in response to the issue you’ve raised. It’s not necessary to include it throughout the letter.

Use this form of address even if you’re initially introduced to them more casually. Allow the mayor to tell you if you have their permission to call them something else, such as by their first name.

In the US, you can also address the mayor as “Your Honor,” although this is considered more formal. Saying “Mr. Mayor” or “Madam Mayor” is also acceptable. Listen to the forms of address people around you use if you’re unsure – particularly staff in the mayor’s office. Other countries may follow different formalities. When in doubt, listen to others around you or ask a member of the mayor’s staff how you should properly address the mayor. For example, in Canada you could also refer to the mayor as “Your Worship,” although this is considered more formal (similar to “Your Honor” in the US). [10] X Research source

For example, if you were introducing the Mayor of Nashville at a public event, you would address her as “The Honorable Megan Barry, Mayor of the city of Nashville. " Full formal titles vary among countries, so make sure you’re using the correct title. For example, in the UK and British commonwealth countries, you typically would say “The Worshipful The Mayor of Nashville, Councillor Megan Barry. "