Mount Chimaera was a place or places in ancient Lycia, notable for volcanic phenomena and said by some ancient sources to be the origin of the myth of the Chimera.

Ctesias is the oldest traceable author to offer this euhemerizing theory. This was the citation given by Pliny the Elder, who in his second book of Historia Naturalis identified the Chimaera with the permanent gas vents in Mount Chimera, in the country of the ancient Lycian city of Phaselis, which he described as being "on fire", adding that it "...indeed burned with a flame that does not die by day or night". Pliny was quoted by Photius and Agricola, although the exact location of the mountain described by Strabo is still open to debate.