How do you say "recognized authority" as in "recognized authority in a field of study"? I've been searching for the specific way to say "recognized authority" as in "recognized authority in a field of study". I intend to use it as a label, like "John (recognized authority)". I've been able to find in jisho, but it seems to mean more "reputation" than "recognized authority" in the sentences I've found. Anything with the same meaning will also be appreciated.

The most common phrase would be {} if one is among the best in the field.

There is {}, but it is not nearly as common as the above. In case one is just relatively well-known without being among the most, it would be a more appropriate phrase than the first one above.

Though does not directly contain "recognized", but it is more than implied because if you are not recognized, you will not be .

Much less common and/or less natural-sounding phrases would include:

{}{}, {}, etc.