Cerro Tres Kandú, Mountain peak in General Eugenio A. Garay, Paraguay.

Cerro Tres Kandú is the highest point in Paraguay, a broad, soft-profiled hill of the Ybytyruzú range reaching 842 meters on the Guairá–Caazapá border, in the municipality of General Eugenio Garay. Its slopes are covered with green vegetation, and a red dirt track curves uphill toward the summit, where abandoned radio-link installations of the Paraguayan Army and ANDE remain.

Cerro Tres Kandú gained strategic value in the 20th century when the Paraguayan Army installed a repeater and radio link on its summit for military communications. The national electricity company, ANDE, later mounted its own radiocommunication repeater there. Both installations are now abandoned and out of service.

The summit's name comes from Guaraní: Yvyty Perõ, also rendered Tres Kandú, and the peak is informally called 3K. The abandoned Paraguayan Army and ANDE repeater and radio-link installations still stand on the hilltop, a visible trace of its former role in national radiocommunications.

The summit lies on the border between Guairá and Caazapá departments, in the municipality of General Eugenio Garay. Temperatures drop about four degrees Celsius from base to summit, and are lowest at night and dawn. Summer averages 18–28 °C; winter 8–20 °C.

Cerro Tres Kandú is informally called 3K, and its Guaraní name is Tres Kandu; the summit also carries the abandoned repeater and radio-link installations once run by the Paraguayan Army and the national electricity company ANDE. The temperature at the top is usually about four degrees lower than at the base.