Konstantinos Galatis was a Greek politician who served as Mayor of Athens.
Galatis was born in Ithaca to an aristocratic family. He was brother to Nikolaos Galatis who was a member of the Friendly Society which organised the Greek War of Independence.
Galatis settled in Vraila, Romania and later in Athens where he was elected Mayor on November 14, 1854. He was reelected in 1855 but died in office on March 24, 1857.