Volcán de Fuego (Spanish pronunciation: [bolˈkan de ˈfweɣo]; Spanish for "Volcano of Fire", often shortened to Fuego) or Chi Q'aq' (Kaqchikel for "where the fire is") is an active stratovolcano in Guatemala, on the borders of Chimaltenango, Escuintla and Sacatepéquez departments.

Part of the mountain range of the Sierra Madre, the volcano sits about 16 kilometres (9.9 mi) west of Antigua, one of Guatemala's most famous cities and a tourist destination. It has erupted frequently, most recently in June and November 2018, 23 September 2021, 11 December 2022, 4 May 2023, and 4 June 2025.

Fuego is famous for being almost constantly active at a low level. Small explosions of gas and ash occur every 15 to 20 minutes, but larger eruptions are less frequent. Andesite and basalt lava types dominate.

The volcano is joined with Acatenango volcano to its north and collectively the complex is known as La Horqueta. Between Fuego and Acatenango is La Meseta, a scarp marking the remains of an older volcano that collapsed around 8,500 years ago. Fuego volcano started to grow after the collapse of La Meseta.

In 1881, French writer Eugenio Dussaussay climbed the volcano, then practically unexplored. First, he needed to ask for permission to climb from the Sacatepéquez governor, who gave him a letter for the Alotenango mayor asking for his assistance with guides to help the explorer and his companion, Tadeo Trabanino. They wanted to climb the central peak, unexplored at the time, but could not find a guide and had to climb to the active cone, which had a recent eruption in 1880.

British archeologist Alfred Percival Maudslay climbed the volcano on 7 January 1892. Here is how he described his expedition:

[...] we arranged to start the very next day for the village of Alotenango. On 7 January we left that village about 7 o'clock in the morning with seven Mozos, carrying food, clothing, and my camp-bed, and rode for an hour towards the mountains, when we dismounted and sent back our mules. The first two hours' climb was not so very steep, but it was tiring work walking over the loose mould and dry leaves under the thick forest. [...] we recommenced our climb under shadow of the forest by a steep path cut through the undergrowth. At the height of about 9500 feet we, for the first time since starting, got a sight of the peak rising on the other side of a deep ravine. The whole of the slope on which we looked was bare of vegetation, and presented to the eye nothing but desolate slopes of ashes and scoriae broken higher up with patches of burnt rock; we scrambled on through the thick undergrowth, often with loose earth under foot, and by degrees the vegetation changed and we got amongst the pine-trees. At about 11,200 feet we came to a spot where the earth had been levelled for a few yards by the Indians, and there we determined to pass the night. [...] then returned and watched the reflection of the sunset over the more distant peaks and against the perfect cone of Agua. [...] but the cold which followed the sunset soon took all our attention. [...] We turned out of our shelter at about half-past four in the morning, and felt all the better after drinking hot coffee; we then sat for an hour watching a most beautiful dawn and sunrise. At the opposite side of the valley rose the Volcano of Agua, sloping on one side to the plain of Antigua, and on the other in a long unbroken sweep to the sea, more than forty miles away. Peak after peak stood out against the red light into the far distance, and on the right the low coast-line and the sea showed up very clearly. As soon as the sun was up we started for the summit. I stopped on the way to get a photograph of the cone, which lay to the left of us as we ascended; but the clouds came over just as I was ready, and I had to give it up. A little over 12,000 feet we left the scraggy pine-trees and arrived at the northern end of a cinder ridge, called the Meseta, which is at the summit of the slope we had been climbing.

— Alfred Percival Maudslay, A Glimpse at Guatemala