Number of countries in which English is the common language?

It's difficult to give a definitive number of countries where English is the "common language" because "common" can be interpreted in different ways.

Here are some different perspectives:

* English as an Official Language: There are around 67 countries where English is an official language. This means it has legal status and is used in government, education, and legal systems.

* English as a First Language: There are around 12 countries where English is considered the primary language spoken by the majority of the population.

* English as a Widely Spoken Language: There are many more countries where English is spoken by a significant portion of the population, even if it's not the official language. This could include countries where English is used in business, education, or media.

Therefore, depending on your definition of "common," the number of countries could range from 12 to 67 or even more.