Ekkehart Malotki (born 1938) is a German-American linguist, known for his extensive work on the documentation of the Hopi language and culture, specifically for his refutation of the myth that the Hopi have no concept of time. He is professor emeritus at Northern Arizona University. He studied with philosopher and linguist Helmut Gipper at the Westfälische Wilhelms-Universität at Münster and his early work was a continuation of his mentor's. Malotki conducted four years of research on the Third Mesa, studying Hopi spatial and temporal reference. He published two large volumes, one in German, Hopi-Raum (Hopi Space) and one in English, Hopi Time. Subsequently he published a large number of texts and myths in the Hopi language. He was also a principal data constructer and co-editor of the great Hopi Dictionary: Hopìikwa Lavàytutuveni, and he supplied the Hopi subtitles for the Qatsi trilogy.
- Hopi Dictionary Project, (University of Arizona Bureau of Applied Research in Anthropology) (1998). Hopi Dictionary: Hopìikwa Lavàytutuveni: A Hopi-English Dictionary of the Third Mesa Dialect with an English-Hopi Finder List and a Sketch of Hopi Grammar. Tucson, Arizona: University of Arizona Press. ISBN 0-8165-1789-4.
- Leavitt, John (2011). Linguistic Relativities: Language Diversity and Modern Thought. Cambridge, UK: Cambridge University Press. ISBN 978-0-521-76782-8.
- Malotki, Ekkehart (1979). Hopi-Raum: Eine sprachwissenschaftliche Analyse der Raumvorstellungen in der Hopi-Sprache (in German). Tübingen: Gunter Narr Verlag.
- Malotki, Ekkehart (1983). Hopi Time: A Linguistic Analysis of the Temporal Concepts in the Hopi Language. Trends in Linguistics. Studies and Monographs. 20. Berlin, New York and Amsterdam: Mouton Publishers.