Święty Marcin [ˈɕvjɛntɨ ˈmart͡ɕin] ("Saint Martin"), in full ulica Święty Marcin ("Saint Martin Street"), is a main central street in the city of Poznań in western Poland. It runs from south of the old town district, westwards past the church of St. Martin of Tours from which it takes its name, past the "Zamek" (former German imperial palace), to Adam Mickiewicz Square, and finally to University Bridge (Most Uniwersytecki), by which it crosses the railway line and leads to the roundabout called Rondo Kaponiera.