This study is intended to provide a grammatical description of Ostyak, one of the Uralic languages spoken in Western Siberia. The description is based on the Northern Ostyak dialect of Obdorsk, although divergent features of other dialects are also discussed. The present paper emphasizes the syntactic aspect of the language, typically ignored in previous descriptive ork on Ostyak, which mostly concentrates on its phonology and morphology. Part 1 is a concise sketch of the Ostyak grammar, made up of the following sections: