The equator runs through zero states, as it is an imaginary line that circles the Earth at 0 degrees latitude. It passes through the following countries:

* South America: Ecuador, Colombia, Brazil

* Africa: São Tomé and Príncipe, Gabon, Republic of the Congo, Democratic Republic of the Congo, Uganda, Kenya, Somalia

* Asia: Indonesia, Malaysia, Kiribati

* Oceania: Kiribati, Indonesia, Papua New Guinea

Let me know if you have any other questions!