Abbreviating Professional Titles and Academic Degrees - The Blue Book of Grammar and Punctuation (2024)

American English includes many details concerning items of style. One such item is the abbreviation of professional titles and academic degrees. By becoming more familiar with this usage, you will become more precise in your daily formal writing. This precision can then also potentially conserve more space for other words you’re expressing.

Abbreviating Professional Titles

A professional (formal) title is typically one that indicates authority, professional status, or academic activity. As a general rule, we can abbreviate certain titles when they appear before full names or before initials and last names. In American English, abbreviations include a period.

We would not abbreviate such titles before last names alone.

*Note that St. can be either abbreviated or spelled in full if with a first name only: St. Thomas, Saint Thomas; otherwise, standard guidelines would apply: St. Dominic Savio, but Saint Savio.

Similarly, we would abbreviate Hon. for Honorable and Rev. for Reverend when they do not include the word the and appear before full names or before initials and last names. We also would not abbreviate such titles before last names alone.

When a formal title follows a person’s name, we abbreviate the title with a period: Jr. (Junior), Sr. (Senior), Esq. (Esquire). We would include a comma before Esq. but not before Jr. and Sr.

Bartholomew H. Makepeace, Esq.

Preston B. Franklin Jr.

Ernesto R. Gonzalez Sr.

Note we would not use the abbreviation Esq. when another title is given before or after the name:

Correct: Bartholomew H. Makepeace, Esq.
Incorrect: Mr. Bartholomew H. Makepeace, Esq.

Correct: B.H. Makepeace, Esq.
Incorrect: B.H. Makepeace, M.D., Esq.

Abbreviating Academic Degrees

Individuals might choose to identify themselves with an academic degree or designation of achievement attained. The following are common abbreviations for such distinctions.

When an abbreviated academic reference is included, the abbreviation would follow the person’s full name and be set off by a comma. No other title should precede the name.

Correct: Tyra E. King, M.D.
Correct: T.E. King, M.D.

Incorrect: Dr. Tyra E. King, M.D.
Incorrect: Doctor King, M.D.

Related Topics

Punctuation for Abbreviations
Capitalization of Academic Degrees
Capitalization of Job Titles

Pop Quiz

Choose the correct forms of professional titles according to their context in each sentence.

1. The idea to rebuild the canal began with [Sen. / Senator] Joe Stevens.

2. The white paper on a potential new treatment for cystic fibrosis was written by [Dr. / Doctor / no title] Paula Lacroix, M.D.

3. [Hon. / The Honorable] William Guyer will be delivering the keynote speech tonight.

4. [Gov. / Governor] Bridges met with the state representatives for three hours today.

5. The name on the card says [Mr. / no title / Mister] Andrew H. Rudolph, Esq.

Pop Quiz Answers

1. The idea to rebuild the canal began with Sen. Joe Stevens.

2. The white paper on a potential new treatment for cystic fibrosis was written by [no title] Paula Lacroix, M.D.

3. The Honorable William Guyer will be delivering the keynote speech tonight.

4. Governor Bridges met with the state representatives for three hours today.

5. The name on the card says [no title] Andrew H. Rudolph, Esq.

If the article or the existing discussions do not address a thought or question you have on the subject, please use the "Comment" box at the bottom of this page.

16 responses to “Abbreviating Professional Titles and Academic Degrees”

1. Mel Carpenter says:

   February 9, 2022, at 10:00 am

   I like your article on title abbreviations, but it was not complete enough for me. I have been confused many times about the correct abbreviation of military ranks. To add to the confusion, a Captain in the Navy (pay grade O6) is not the same as a Captain in the Army, Marine Corps, or Air Force (pay grade O3). An Army Captain has the same pay grade (O3) as a Navy or Coast Guard Lieutenant. I am a retired Navy O5. Am I a CDR, Cmdr., or what? I’m “CDR” on the name tag of my flight suit, but when I write a peer-reviewed article for a scientific magazine, I’m Cmdr.

   Knowing and using the correct abbreviations for enlisted ranks is even more confusing. What if I were writing to an Army Specialist First Class and a Navy Petty Officer Third Class? Help!

   • GrammarBook.com says:

     February 14, 2022, at 11:19 am

     This article is meant to be a broader overview of professional titles as opposed to an elaboration of profession-specific titles. For military style, you might begin your research at a website such as:
     https://www.cem.va.gov/docs/abbreviations/Ranks_Navy.pdf
     You might also look into acquiring a copy of the U.S. Government Publishing Office (GPO) Style Manual, which, to our understanding, addresses writing style in the military. In the future, GrammarBook.com might add an article that discusses military style in greater depth as well.

2. Joseph Hofstrand says:

   February 9, 2022, at 9:52 pm

   Does Mrs. mean Mistress?

   • GrammarBook.com says:

     February 14, 2022, at 11:33 am

     The abbreviation Mrs. originated from the word mistress when the word had a different connotation from the one we give it today. Over time, the abbreviation evolved to mean a married woman, the context in which it is now widely recognized. Some people currently interpret Mrs. as an abbreviation for its enunciation (missus), but some prescriptive grammarians still view that interpretation as inaccurate or overly colloquial.

3. Susan Knoll says:

   February 10, 2022, at 7:44 am

   In my opinion, in the section entitled, “Abbreviating Professional Degrees,” it would be more congruent with the other listed examples to indicate that M.D. is the abbreviated titled for “Medical Doctor,” rather than “Doctor of Medicine.”

   • GrammarBook.com says:

     February 14, 2022, at 3:10 pm

     See Also

     Master’s Degree Abbreviations Demystified – The Continents States University

     The format “M.D.” originated from the Latin title “Medicīnae Doctor” (Doctor of Medicine). Similarly, “Ph.D.” originated from the Latin title “Philosophiae Doctor” (Doctor of Philosophy). You’ll note that both abbreviations follow the format of their Latin letter order and their English interpretation, although “Doctor of Medicine” and “Medical Doctor” are both wholly acceptable as interchangeable alternatives. Conversely, a title such as “Registered Nurse” did not originate from a Latin title, so its abbreviation follows its English letter order (R.N.).

4. James Johnson says:

   September 11, 2022, at 2:06 pm

   Of the following two:

   Rev. Your Name, M.D.

   or

   Rev. Dr. Your Name

   Are both of these acceptable?

   • GrammarBook.com says:

     September 15, 2022, at 10:40 am

     When an abbreviated academic reference is included (M.D.), no other title should precede the name. The Associated Press Stylebook says, “Use the Rev. Dr. only if the individual has an earned doctoral degree (doctor of divinity degrees frequently are honorary) and reference to the degree is relevant.”

5. Y. CHAN says:

   October 15, 2022, at 6:28 am

   I have a question:
   For example: H.B. Robinson, XXX, XXX, XXX, XXX

   There are four designatory titles of professional institutes: “BBB, FFF, CCC, and DDD.”
   “BBB” and “FFF” are from the same professional institute AAA. “CCC” and “DDD” are from other bodies.

   Should I add letters in between “BBB, FFF”?
   H.B. Robinson, BBB, CCC, DDD, FFF (in alphabetical order)
   (But it will separate “B and F” from the same professional institute!)
   What should I do?
   Thank you.

   • GrammarBook.com says:

     October 18, 2022, at 3:40 pm

     We might not be inclined to identify so many credentials unless they are essential to establishing credibility with a particular audience. Listing only the highest or most recognized distinction might be a more efficient approach.

     Without knowing the context in which the distinctions appear, we would suggest they could be listed either in either alphabetical order or by descending order of rank. If separating the distinctions from their institutions will cause confusion, you might present them as follows:

     Name, AAA BBB and FFF; CCC; DDD

6. Tristan says:

   December 7, 2022, at 7:40 am

   An interesting thing I found is that at our university, the professors are listed on the site with the following abbreviation:
   Prof. Dr. Name
   Is this a valid technique within the English language? I ask this as no one on the internet seems to know this. And if I can only use one of the two, which one should I choose to show the most respect to the person reading the letter?
   

   • GrammarBook.com says:

     December 10, 2022, at 12:39 pm

     Our post Abbreviating Professional Titles and Academic Degrees points out that if you have a formal title before a name, do not add another: e.g., Dr. Mrs. Jane Smith would be incorrect. Our understanding is that professor is generally regarded as a higher title than doctor in the U.S. A higher title would usually suggest greater respect.

7. Susan Hasho says:

   October 2, 2023, at 10:40 am

   “Sr. Director” or “Sr” (without period)?

   • GrammarBook.com says:

     October 9, 2023, at 8:06 pm

     As the post states, “In American English, abbreviations include a period.” However, if this is a job title, the major style manuals recommend spelling the title out in formal writing. For capitalization rules with job titles see our posts Capitalization of Job Titles and When to Capitalize People’s Titles.

8. Shelley Ebbinghouser says:

   January 23, 2024, at 9:45 am

   I am doing a letter to two people in a county prosecutor’s office, a Prosecutor and a Chief Assistant Prosecutor. In the address block, I have spelled out these titles, as the name of each person follows the title. However, in the body of the letter when referring to either of the addressees, I am abbreviating Chief Assistant Prosecutor as Chief AP xxx. Wondering if this is correct or should it be spelled out every time in the body. AP is a common abbreviation used when speaking about Assistant Prosecutors. Thanks.

   • GrammarBook.com says:

     January 23, 2024, at 1:24 pm

     If the abbreviated title is understood by all who will read the letter, and your education and experience do not lead you to detect a detour from professionalism, we see no reason to observe strict formality in spelling out each reference. Your recipients might also appreciate your conservation of words and character space.