Janashia () is a Georgian surname that may refer to:
Davit Janashia (born 1972), Georgian footballer and coach Gigla Janashia (1927–2005), Georgian mathematician Konstantine Janashia (born 1990), Georgian strongman Nikoloz Janashia (1931–1982), Georgian historian and public benefactor Simon Janashia (1900–1947), Georgian historian and public benefactor Zaza Janashia (born 1976), Georgian footballer and coach