The Guatemala–Honduras border is an administrative boundary lying to the east of Guatemala and northwestern Honduras.
Its length is 256 km. It is the third largest border of Guatemala after the borders that separate that country from Mexico and Belize. for the Honduran part is the smallest border after those with Nicaragua and El Salvador.
It covers a northeast to southwest, leaving the Gulf of Honduras in the Caribbean Sea at the mouth of the Motagua, a river which rises in Guatemala and that will mark the border between the two country for a few kilometers. It is extended, always on an axis-northeast southwest by the border between Guatemala Salvador.