Use Professor Last-Name first; fall back to Dr. Last-Name if only “Dr.” appears in the signature. Never stack both titles.
Professor Last-Name is the primary academic title; Dr. Last-Name is the fallback when “Professor” isn’t present.
How do you write the title of a professor?
Check the signature first. If it says Professor Jane Smith, PhD, go with Dear Professor Smith. If it only shows Dr. Jane Smith, use Dear Dr. Smith instead.
Professor denotes rank; Dr. denotes doctorate. Stacking both is incorrect in U.S. English.
What’s the deal with professor titles?
Academic titles in U.S. higher ed aren’t just window dressing. They follow a clear hierarchy: Instructor → Assistant Professor → Associate Professor → Professor. Professor is the top rank, while Dr. is just a courtesy for anyone with a doctorate (PhD, EdD, etc.). Medical doctors with a full professorship? They’re still addressed as Professor—no need for “Professor Doctor.”
According to the AP Stylebook (2025), MLA Handbook (9th ed.), and The Chronicle of Higher Education style guide, title stacking is incorrect in U.S. English.
Always check the signature first; default to Dr. if unsure and never stack titles.
How do I choose the right title in writing?
Follow these steps:
- Look at the signature. If it says “Professor,” use that.
Dear Professor Smith
- If it only says “Dr.”, go with
Dear Dr. Smith. Even if you know they have a PhD, “Dr.” is the standard written form in English.
- Don’t stack titles. Writing
Dear Professor Doctor Smith isn’t just awkward—it’s wrong in U.S. English. AP Stylebook (2025) says no to title stacking.
- When unsure, default to “Dr.” If you’re not positive they’re a full professor,
Dear Dr. Last-Name is the safest bet. The MLA Handbook (9th ed.) backs this up.
Switch to first name only after explicit written permission; otherwise use academic title.
What if none of these options work?
- If the professor has asked students to go by their first name (some seminar leaders do this), you can switch to
Dear Jane—but only after they’ve given written permission or it’s part of class policy.
- Emailing admin staff about a professor? Use their academic title:
Dear Professor Lee.
- Got an emeritus professor? Address them as
Dear Professor Emeritus Carter.
Verify rank in university directories; set email templates to auto-fill correct titles.
How can I avoid title mistakes in the future?
Keep these tips in mind:
| Context |
Use |
| Full professor signature |
Dear Professor Adams |
| Only “Dr.” in signature |
Dear Dr. Brown |
| Medical doctor who is also a professor |
Dear Professor Lee (skip the “Doctor” part) |
| Instructor without doctorate |
Dear Ms./Mr. Rivera or Dear Instructor Rivera |
Set up your email templates to auto-fill the right title based on rank. Most university directories list faculty ranks—double-check before hitting send to dodge those awkward “oops, wrong title” replies.
Holders of doctorates are addressed as Dr. (Name) or Professor (Name) in writing or conversation.
How do you title a professor with a PhD?
Anyone with a doctorate gets either Dr. Last-Name or Professor Last-Name, depending on their rank. The choice isn’t random—check their signature first.
Stick with “Professor X” or “Dr. Y” unless they’ve explicitly asked for first names.
How do you address a professor by name?
Unless the professor has specifically said you can call them by their first name, keep it formal. “Professor Smith” or “Dr. Jones” are your safest options. If they want first names, they’ll usually tell you pretty quickly.
“Dear Professor X” is correct; never use “Dear professor” without the name.
Is Dear professor correct?
Nope. The higher-ranking title is Professor, so you’d say Professor X, not Professor Doctor X. You wouldn’t write Dear professor without the last name either—always include it.
The standard academic ranks are Instructor, Assistant Professor, Associate Professor, and Professor.
What is the title of a professor?
The standard academic ranks move up like this: Instructor, Assistant Professor, Associate Professor, then Professor. Add modifiers like Emeritus, Clinical, or Adjunct when needed—Professor Emeritus Carter, for example.
When in doubt, “Dr. Last Name” is the safest option for academics you don’t know well.
Should I address professor or Doctor?
If you’re unsure, go with “Dr. Last Name”. It’s generally the standard form for instructors who aren’t full professors—lecturers, readers, senior lecturers, and research associates all fit here.
The academic title of Professor is higher than a Doctor in university settings.
Is professor a higher title than doctor?
In most cases, yes. Professor is the highest academic position at a university, while Doctor refers to the degree held. Remember, this is about PhDs—not medical doctors.
Anyone with a doctoral degree can be addressed as “Dr. ...”
Can PhD be called doctor?
Absolutely. Anyone who’s earned a doctoral degree—PhD, DTh, DrPH, DEng, you name it—can be called “Dr. Last-Name”. It’s that simple.
The titles for doctoral degrees aren’t interchangeable.
Does a PhD change your title?
Not really. If someone has a PhD, they’re Dr. Last-Name. Other doctoral degrees have their own specific titles, but they’re all still “Dr.” in everyday use.
If the title includes “professor,” use “Professor Last-Name.”
Can I call my lecturer professor?
In Canada and the U.S., if their title includes the word professor—whether it’s Assistant, Associate, Clinical, or Research—address them as “Professor Last-Name”.
In the USA, the title Professor is given to people with a PhD who teach at any academic level.
Who can use Title professor?
In the U.S., anyone with a PhD who teaches at a university can be called Professor, regardless of their specific role. It’s not about the job title—it’s about the degree and position.
A doctor becomes a professor by earning a doctoral degree in medicine, completing residency, and obtaining necessary certifications.
How does a doctor become a professor?
Here’s the path: medical school, residency, internship, then passing the medical license exam. After that, they’ll need to meet their institution’s requirements for professorship—which usually means publishing research and teaching experience.
Sir is acceptable but not the standard form; always use “Doctor” for medical doctors.
Is it rude to call a Doctor sir?
Calling a medical doctor “Sir” isn’t rude, but it’s not the convention either. Stick with “Doctor Last-Name” to be safe. For women, never use “Miss”—it undermines professional status.
In the USA, the title Professor is reserved for PhD holders who teach at any academic level.
Do you need a PhD to be called Professor?
In the U.S., yes. The title Professor is typically given to PhD holders who teach at universities. Those with master’s degrees usually go by Instructor instead.
Lecturers and professors both teach college students, but their career paths and responsibilities differ.
What’s the difference between a lecturer and a Professor?
Both teach postsecondary students, but professors usually follow academic career paths toward tenure. Lecturers, on the other hand, often have another career and are hired to teach specific courses—no tenure track involved.
The title ‘Professor’ is granted by an institution and expires when the position ends.
Is Professor a title for life?
No. The title Professor is tied to your position at an institution. Resign, retire, or get terminated, and you can no longer use the title legitimately. It’s not a lifelong honorific.
Edited and fact-checked by the TechFactsHub editorial team.