- Open Directory Reference: Dictionaries: World Languages: M: Mayan
- Open Directory Science: Social Sciences: Archaeology: Periods and Cultures: Mesoamerican: Maya
- Open Directory Science: Social Sciences: Archaeology: Topics: Archaeoastronomy: Mayan
- Open Directory Science: Social Sciences: Linguistics: Languages: Natural: Languages of the Americas
- Open Directory Society: History: By Region: North America: Ancient Age: Mayan
- Open Directory Society: Ethnicity: The Americas: Indigenous: Native Americans