Mount Ashitaka, Extinct stratovolcano in Shizuoka Prefecture, Japan.

Mount Ashitaka is an extinct stratovolcano in Shizuoka Prefecture that rises to 1,504 meters above sea level. It extends across seven kilometers with multiple peaks covered in dense forest, with Mount Echizen-dake forming the highest point and Ashitaka-yama reaching 1,188 meters as a secondary summit.

Mount Ashitaka is a Quaternary stratovolcano that began erupting about 400,000 years ago, together with Hakone and Komitake volcanoes. Activity ended roughly 100,000 years ago with the extrusion of the Kurodake lava dome and pyroclastic flows. Erosion since then has removed any clear crater, and the northern flank was later absorbed into the foothills of Mount Fuji.

At the summit of Ashitaka Peak stands Momosawa Shrine, which enshrines Ashitaka Myojin; the mountain was once written Ashidaka. Along with Mount Fuji, Ashiwada-yama in Yamanashi and Ashigara in Hakone, it formed the "Fuji Three Legs". One theory holds that the hawk in the auspicious first dream "one Fuji, two hawks, three eggplants" refers to Ashitaka, Suruga's second-highest mountain.

Several marked hiking trails lead through the forest to the summit, with the main route starting from the eastern side and taking around four hours to complete. The trails are generally walkable during summer, though they can become slippery after rain.

In the Edo period the mountain's southern foot held the Ashitaka horse pastures: in 1797 the shogunate official Iwamoto Masanori established the Onoe, Motono and Kasano pastures, later joined by Onoe-shin, run as four shogunate pastures. Wild horses survived in the mountains and were protected as sacred horses by the Okitsu family, priests of Momosawa Shrine on the summit.