Reinis Kaudzite (Old orthography: Reinis Kaudsit; May 12, 1839 – August 21, 1920), was a Latvian schoolteacher and writer.
His novel Mernieku laiki ("Time of the Surveyors") was the first novel written in Latvian language, co-authored with his brother Matiss Kaudzite in 1879.Reinis Kaudzite was born in "Madari", Vecpiebalga Parish, in the heart of Vidzeme.
He had not attended the school himself but became a teacher of geography and religion classes in Kalna Kaibeni parish school at the age of 28.