Northern Kurdish (; ), also called Kurmanji (; ), is a group of Kurdish dialects predominantly spoken in southeast Turkey, northwest Iran, northern Iraq and northern Syria. It is the most widespread dialect group of the Kurdish languages. While Kurdish is generally categorized as one of the Northwestern Iranian languages along with Baluchi, it also shares many traits with Southwestern Iranian languages like Persian, apparently due to longstanding and intense historical contacts, and some authorities have gone so far as to classify Kurmanji as a Southwestern or "southern" Iranian language.