Konstantinos Tsiaras (; born 2 July 1966) is a Greek politician and member of New Democracy who currently serves as Minister of Rural Development and Food and former Minister of Justice in the Cabinet of Kyriakos Mitsotakis from 2019 to 2023. He is a member of the Hellenic Parliament for his hometown Karditsa. In addition to Greek, his native language, he speaks English, French, German, Italian, and Russian.
Tsiaras graduated from the School of Medicine at Dimokriteion University of Thrace, with a specialization in microbiology-biopathology. He received his doctorate from the University of Athens Medical School.