Cognomen Mercês (Merces 
, Mercês 
) , around the globe, is a common family name. The surname Mercês is habitual in Brazil, where it is quite a rare surname, Portugal, and Albania, where it is a rare surname. Not in comparison with a country's population, it is commonest in Brazil, Portugal, and India. Much less frequently, Mercês is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Merces | Portugal, Angola, United States, India, Brazil |
| Mercês | Portugal, United Kingdom, Spain, United States, Brazil |
| jaime mercês Portuguese footballer, PT (b. 1963) |
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| ednei de a. mercês Brazilian herpetologist, BR |
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| maria conceição pereira mercês leader of a Candomblé temple |
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| michelle p mercês researcher |
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| claudia angélica mainenti ferreira mercês researcher |
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| césar das mercês BR |
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