Surname Cosier (Cosier 
) , in the entire world, is a rare cognomen. The cognomen Cosier is habitual in Australia, where it is a rare surname, Romania, and the United Kingdom. Measured by absolute frequency, this name is the most popular in Australia, the United States, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Cosier | Romania, United Kingdom, Australia, United States, Canada |
|
janet cosier banker |
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michelle cosier Australian basketball player, AU (b. 1982) |
|
| richard a. cosier American academic, US (b. 1947) |
|
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| gary cosier Australian cricketer, AU (b. 1953) |
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