Cognomen Calam (Calam 
) , in all the world, is quite a common family name. The last name Calam is characteristic of Philippines, where it is a rare surname, Mexico, and the United Kingdom. Measured by absolute frequency, it most frequently occurs in India, Philippines, and Mexico. Very seldom, Calam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Calam | United Kingdom, Mexico, India, Indonesia, Philippines |
| john calam b.17 February 1948 d.9 July 2001 (b. 1948) |
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| john calam (b. 1948) |
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| rachel calam researcher |
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