Lagrange is the name of some places in the United States of America:

• Lagrange, Georgia
• Lagrange, Indiana
• Lagrange, Maine
• Lagrange, New York (two places):
  • in Orange County
  • in Wyoming County
• Lagrange, Ohio
• Lagrange, Virginia
• Lagrange, Wyoming (Note: The United States Postal Service spells it this way. The official spelling of the town is LaGrange.)
• Lagrange County, Indiana

Lagrange is the name of several communes in France:

• Lagrange , in the Hautes-Pyrénées département
• Lagrange , in the Landes département
• Lagrange , in the Territoire de Belfort département

There are also a number of places named LaGrange and La Grange.

Joseph Louis Lagrange was a famous mathematician and physicist. Lagrange point is named after Lagrange.