Last name Janchi (Janchi 
, Янчи 
, จันจิ) , throughout the world, is a rare cognomen. The family name Janchi is characteristic of Eastern Europe, particularly Belarus, where it is a rare surname, Ukraine, where it is a very rare surname, and Russia. Measured by absolute frequency, it most frequently occurs in Belarus, India, and Ukraine. Likewise, Janchi is the forename as well as the last name.