Specialist in vs specialist on

Both 'specialist in' and 'specialist on' are commonly used phrases in English, but they are used in different contexts. 'Specialist in' is used to indicate the area of expertise or specialization of a person, while 'specialist on' is used to indicate the topic or subject that a person is focusing on or discussing.

Last updated: April 13, 2024 • 1100 views

Specialist in

This phrase is correct and commonly used in English.

Use 'specialist in' when referring to the area of expertise or specialization of a person.

Examples:

She is a specialist in pediatric medicine.
He is a specialist in environmental law.
They are specialists in digital marketing.

Alternatives:

expert in
proficient in
skilled in
knowledgeable in
adept in

specialist on

This phrase is correct and commonly used in English.

Use 'specialist on' when referring to the topic or subject that a person is focusing on or discussing.

Examples:

She is a specialist on climate change.
He is a specialist on ancient history.
They are specialists on international relations.

Show examples from the web [+]

May 18, 2020 ... Synonym for He is a specialist on (something). One specialises 'in' a particular field of knowledge . This may be why specialist 'in' feels ...
Mar 15, 2004 ... Hello, teachers! Which is the proper preposition in each sentence? 1. He is a world-famous specialist on/in geology. 2.
Dec 1, 2017 ... The implication of the shortage of health workforce specialist on universal health coverage in Kenya. Hum Resour Health.
Oct 20, 2022 ... Salem Hospital has addiction specialist on call, and that came in handy when a patient got help after coming in for a different problem.
Feb 19, 2023 ... Post the Definition of specialist to Facebook Facebook. Share the Definition of specialist on Twitter Twitter ...

Alternatives:

expert on
authority on
knowledgeable on
focused on
well-versed on

What Our Customers Are Saying

Our customers love us! We have an average rating of 4.79 stars based on 283,125 votes.
Also check out our 2,100+ reviews on TrustPilot (4.9).

"TextRanch has been a great help to me, especially at work because I often email my boss."
Jhey April 2025
"Thank you!"
Sachi Nakama July 2024
"I have literally been through chat, PI, claude, bard and bing and I got conflicting answers! Thank you! Human intelligence reigns!"
Retha July 2024
"Faster than AI"
CYNTHIA December 2023
"This was very helpful and I personally think this site is the best."
Kaden October 2023
"It was extremely thorough and very helpful!"
imperialelisa October 2023
"7 years without any disappointment. Always 100% satisfied. You guys are the best in the world at what you do. Thank you so much :)"
Zubair Alam October 2023
"In a world of text messages and online communication, this is great to have as a live tool. Thank you."
Selena October 2023
"Without textranch I would be stuck!"
宏祐 October 2023
"Accuracy and fast response. Personal comments from editor. Thank you."
Clh September 2023
"I wasn't aware of this service, it's fascinating and more reliable than standard IA tools available on the internet"
Arturo September 2023
"The fact that you can get reliable fast feedback on your texts."
Vinicius Antonio August 2023
"you guys are better than grammarly i'm being honest here"
ordinary July 2023
"OMG! This is really good than any other text correction tools I've used so far. Highly recommend this."
Vehan July 2023
"Very fast and accurate. thank you."
mojtaba July 2023
"I love this app because it's help to writing skills all of students ♥️"
Tarisini July 2023
"This was exactly the mistake I was looking for, the wording dind´t sound right at first. Better than grammarly!"
Ente July 2023
"The immediate help that I received was reassuring and very satisfactory. Thanks."
priiiyanshuu July 2023
"this helps A LOT for my studies."
kathnunez02 June 2023
"Woow!! I would never have expected such precision! Thank you soooo much!!"
Berta June 2023
"Real Time Editor and not AI. Many Thanks."
Priya June 2023
"The very first thing excites me about Textranch is how much your editors care."
sepideh June 2023
"The fact that texts are checked by human editors rather than by AI, etc. I appreciate this!"
Анна June 2023
"Feel welcome, immediate response, high quality feedback"
martin.roy June 2023