Auxvasse is a city in Callaway County, Missouri, United States. It is part of the Jefferson City, Missouri Metropolitan Statistical Area. The population was 901 at the 2000 census.
Auxvasse is located at 39°0′59″N 91°53′48″W / 39.01639°N 91.89667°W / 39.01639; -91.89667 (39.016478, -91.896780).
According to the United States Census Bureau, the city has a total area of 0.7 square miles (1.7 km²), all of it land.