Family name Siccus (Sika 
, Sack 
, Siccus 
) , in all the world, is a common last name. The surname Siccus is habitual in Sub-Saharan Africa, particularly Ghana, where it is quite a common surname, the Democratic Republic of the Congo, and Ivory Coast, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in India, the Democratic Republic of the Congo, and Ghana. Much less frequently, Siccus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sika | Germany, Ghana, United States, India, Democratic Republic of the Congo |
| Sack | Germany, Ghana, United States, India, Argentina |
| Siccus | Spain, Peru |
| Chacina | Philippines |