Yakin Orsha, wani yaki ne a ranar 8 ga Satumba 1514, tsakanin sojojin kawance na Grand Duchy na Lithuania da Crown na Masarautar Poland , karkashin jagorancin Lithuania Grand Hetman Konstanty Ostrogski;da sojojin Grand Duchy na Moscow karkashin Konyushy Ivan Chelyadnin da Kniaz Mikhail Bulgakov-Golitsa.Yakin Orsha wani bangare ne na dogon jerin yakin Muscovite-Lithuania wanda sarakunan Muscovite suka gudanar da kokarin tattara dukkan tsoffin kasashen Kievan Rus karkashin mulkinsu.Yakin ya dakatar da fadada Muscovy zuwa Gabashin Turai.Dakarun Ostrogski sun ci gaba da fatattakar sojojin Rasha da aka fatattake tare da kwace mafi yawan wuraren da aka kwace a baya, ciki har da Mstislavl da Krychev, kuma an dakatar da ci gaban na Rasha na tsawon shekaru hudu.Duk da haka, sojojin Lithuania da na Poland sun gaji sosai don kewaye Smolensk kafin lokacin hunturu.Wannan yana nufin cewa Ostrogski bai isa ƙofofin Smolensk ba har zuwa ƙarshen Satumba, yana ba Vasili III isasshen lokaci don shirya tsaro.