Surname Mačys (Mačys 
) , worldwide, is a very rare cognomen. The last name Mačys is characteristic of Northern Europe, particularly Lithuania, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mačys | Lithuania |
| vladas mačys (b. 1867) |
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| vytautas mačys LT (b. 1907) |
|
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| jurgis mačys (b. 1912) |
|
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| jonas mačys Lithuanian politician (1938-2012), LT (b. 1938) |
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| juozas juvencijus mačys Lithuanian mathematician, LT (b. 1941) |
|
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| rimantas mačys (b. 1947) |
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