Here we present relevant records of nine species of the genus Carex (Cyperaceae) new for Peru: C. amicta, C. brehmeri, C. camptoglochin, C. enneastachya, C. livida, C. maritima, C. ownbeyi, C. ruthsatzae, and C. vallis-pulchrae. We perform the lectotypification of the names Carex camptoglochin, C. amicta and C. confertospicata.