Cognomen Dharmaratna (Dharmaratna 
) , across the world, is a rare surname. The surname Dharmaratna is characteristic of Sri Lanka, where it is quite a rare surname, Singapore, where it is a rare surname, and Australia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Sri Lanka, Germany, and Australia. Much less frequently, Dharmaratna is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dharmaratna | Germany, India, Sri Lanka, Singapore, Australia |
| dharmaratna śākya (b. 1931) |
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| p. g. r. dharmaratna researcher |
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| w. dharmaratna researcher, LK |
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| dharmaratna herath |
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