Camillus is a town in Onondaga County, New York, United States. As of the 2020 Census, the population was 25,346.

New York State Route 173 (NY 173) is a state highway located in the Syracuse area of central New York in the United States. It takes a slightly bow-shaped route from NY 31 in the town of Van Buren to NY 5 in Chittenango, gently curving to the south of Downtown Syracuse in the center of its 30.59-mile (49.23 km) routing. Even so, NY 173 briefly enters the Syracuse city limits near where it intersects U.S. Route 11 (US 11). NY 173 passes through several suburbs of Syracuse, including Camillus, where it first meets NY 5, and Manlius, where it has a short overlap with NY 92.