Here's a breakdown:
* 67 countries have English as an official language according to the UN: This is the most common definition.
* Other countries have English as a de facto language or language of government and administration, even if not formally declared as official.
* Many countries have English as a common language of business, education, and media, even if not an official language.
So, while 67 is the most widely accepted number, the actual number of countries where English is significantly used is much higher.