Lake Xochimilco (Spanish pronunciation: [sotʃiˈmilko]; Nahuatl languages: Xōchimīlco, pronounced [ʃoːtʃiˈmiːlko] listenⓘ) is an ancient endorheic lake, located in the present-day Borough of Xochimilco in southern Mexico City.

Between 12,000 and 6,000 years ago, the climate in central Mexico warmed and the snowmelt that once fed Lake Texcoco virtually disappeared.

[1] Xochimilco Lake remnants are part of large urban parks in Mexico City, with water-based and land recreation.

Lake Xochimilco is the last remaining native habitat for the axolotl, a species of mole salamander endemic to Mexico.

Given Lake Xochimilco's present extensively compromised and reduced state, and the accelerating impact of Mexico City's urban growth, as of 2008[update] axolotl in the wild are listed as a critically endangered species by the IUCN.