Lach dialects
（重定向自Lachian）
![Map showing the distribution of the Lachian dialects (west) and the Cieszyn Silesian dialect (east) in the Czech-Polish-Slovak borderlands.](/Images/godic/202501/23/Lach_Silesian_dialect_and_Cieszyn_Silesian_dialect1718.png")
![Die Mährischen Mundarten (lachisch gelb)](/Images/godic/202501/23/Maehrisch1718.png")
![Das historische Sprachgebiet der lachischen Mundarten](/Images/godic/202501/23/DialSchlesien1718.png")
The Lachian dialects (Lach dialects, Czech:lašská nářečí, lašstina, Polish:gwary laskie, not to be confused with the Lechitic language group), are a group of West Slavic dialects that form a transition between the Polish and Czech language. They are spoken in parts of Czech Silesia, the Hlučín Region, and northeastern Moravia, as well as in some adjacent villages in Poland. Most Czech researchers consider Lach a dialect of Czech, whereas Polish dialectologists tend to ascribe Polish origins to Lach.