Langstroth Cottage is a historic building on the Western College campus of Miami University in Oxford, Ohio. It was designated a National Historic Landmark on June 22, 1976. The cottage, built in 1856, is now the home for the Oxford office of the Butler County Regional Transit Authority. It was purchased for Beekeeper L. L. Langstroth in 1859, and he lived there for the next 28 years, conducting research and breeding honey bees.