Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
regarding who
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "regarding who" is correct and usable in written English.
It can be used when introducing a topic or question about a specific person or group of people. Example: "I have some concerns regarding who will be responsible for the project moving forward."
✓ Grammatically correct
News & Media
Science
Formal & Business
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
59 human-written examples
Accusations flew back and forth regarding who was to blame.
News & Media
There was no information regarding who the suspects were nor how the cell was uncovered.
News & Media
Asked about the incident afterwards, Sherwood said: "It was an altercation regarding who was marking who.
News & Media
It merely seems to me that clarity regarding who has bestowed this title would provide useful.
News & Media
Sina, a major Chinese web portal, wrote: "There is much speculation at the moment regarding who was behind the bombing.
News & Media
Their polarised perspectives stem from the policy regarding hyperandrogenism and the asymmetry regarding who it burdens and who it benefits.
News & Media
Where the two candidates didn't agree, he went on, was regarding who was best positioned to stop the Republicans.
News & Media
He directed Mr. O'Mara to submit documents regarding who would ultimately control the Web site and its funds.
News & Media
There is confusion regarding who can work in Turkey legally.
Considerable debate exists regarding who might benefit from statins for primary prevention.
The authorization agents make all decisions regarding who can access which resources and for what purposes.
Expert writing Tips
Best practice
When using "regarding who", ensure the context clearly indicates that you are referring to a person or a group of people. Avoid ambiguity by specifying the subject matter clearly in the surrounding sentences.
Common error
Avoid using "regarding who" when the subject is not a person. For instance, instead of saying "concerns regarding what happened", rephrase to something like "concerns about what happened" or "concerns regarding the events".
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "regarding who" functions as a prepositional phrase introducing a relative clause. It sets the context for inquiries or statements about the identity of a person or persons. Ludwig's examples show that it often precedes a question or a clause expressing uncertainty or debate.
Frequent in
News & Media
39%
Science
50%
Formal & Business
3%
Less common in
Wiki
5%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "regarding who" is a grammatically correct and versatile phrase used to introduce questions or discussions about the identity of individuals. As Ludwig AI indicates, it is widely employed in news, scientific, and formal business contexts. While alternatives such as "concerning whom" may offer a more formal tone, "regarding who" remains a common and acceptable choice. To ensure clarity, it's best to use "regarding who" when the subject is clearly a person or group of people, as its overuse in ambiguous situations may lead to confusion.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
concerning whom
Formal alternative using "whom" instead of "who" after the preposition "concerning".
as regards who
Formal alternative, almost interchangeable, indicating the person in question.
about who
More informal alternative using "about" instead of "regarding".
in relation to whom
Formal and specific alternative emphasizing the relationship to a person.
with respect to whom
Formal alternative emphasizing the respect or consideration given to a person.
as to who
Alternative focusing on uncertainty or inquiry about a person's identity.
pertaining to who
Formal alternative indicating relevance or connection to a person.
relative to who
Alternative indicating a comparison or relationship between individuals.
in connection with whom
Alternative highlighting the link or association with a particular person.
in terms of who
Alternative focusing on defining or classifying people.
FAQs
How do I use "regarding who" in a sentence?
Use "regarding who" to introduce a question or topic about a specific person or group. For example: "There are many questions "regarding who" will be appointed as the new CEO."
What are some alternatives to "regarding who"?
Alternatives include "concerning whom", "about who", or "as to who", depending on the level of formality and the specific context.
Is it correct to use "regarding who" in formal writing?
Yes, "regarding who" is acceptable in formal writing, especially when followed by a verb and used to introduce a clause or question. However, consider alternatives like "concerning whom" for a more formal tone.
What's the difference between "regarding who" and "regarding whom"?
"Regarding who" is generally acceptable in modern English, although some may consider "regarding whom" more grammatically correct in formal contexts. "Whom" is the objective case of "who", used when the pronoun is the object of a verb or preposition. However, "who" is increasingly used in place of "whom" in everyday speech and writing.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested