Parnon or Parnonas (Greek: Πάρνων/Πάρνωνας) or Malevo (Μάλεβο) is a mountain range, or massif, on the east of the Laconian plain and the Evrotas valley. It is visible from Athens above the top of the Argive mountains. The western part is in the Laconia prefecture and the northeastern part is in the Arcadia prefecture. The Parnon range separates Laconia from Arcadia. Its summit offers panoramic views of southeastern Arcadia and South Kynouria and much of Laconia that includes the northern and the central portions and reaches as far as the Taygetos mountains. It also views a part of the central Arcadia and the southern Argolis prefectures. It views the Myrtoan and the Laconian Gulfs.

The Parnon Massif is divided into three parts. The northernmost, which is the highest, runs 30 kilometres (19 miles) from just north of Doliana in North Kynouria, eastern Arcadia, southeast to Platanaki Pass. Platanaki, ancient Glyppia, is on the ancient route from Therapnes to South Kynouria between the peaks of Parnon, 1,935 metres (6,348 feet), and Psaris, 1,836 m (6,024 ft). Altitudes on the north rise from 1,100 m (3,600 ft) to 1,300 m (4,300 ft) increasing toward the peak to 1,600 m (5,200 ft) to 1,800 m (5,900 ft) with a tree line at 1,750 m (5,740 ft). Below it are forests of Black Pine and fir; above it, grasslands.