Birth to a Ghanaian parent creates Ghanaian citizenship under the applicable constitutional date rules. Birth in Ghana alone to two foreign parents is not general jus soli.
Sources: Ghana Citizenship Act 2000 (Act 591)
A foreign spouse of a Ghanaian may be registered as a citizen on application.
A child of a Ghanaian citizen parent is Ghanaian under the Citizenship Act and Constitution date rules.
Sources: Ghana Citizenship Act 2000 (Act 591)
Applicants need twelve months residence immediately before applying and at least five years aggregate residence in the prior seven years, plus language, character, and integration conditions. Ministerial approval with presidential assent; discretionary.
Sources: Ghana Citizenship Act 2000 (Act 591) · Ghana Ministry of Interior — naturalization