Itapuca is a Brazilian municipality in the state of Rio Grande do Sul.
It is located at 28º53'43" S latitude and 52º02'12" W longitude, with an altitude of 660 meters above sea level. Its population in 2004 was estimated at 2,620 inhabitants. It has a surface area of 184.48 km².
Coordinates: 28°54′S 52°03′W / 28.900°S 52.050°W / -28.900; -52.050