The Marsh Botanical Garden is a botanical garden and arboretum located on the Yale University campus at 265 Mansfield Street in New Haven, Connecticut, United States.

The Garden was established in 1899 when paleontologist Othniel Charles Marsh, an 1860 Yale College graduate, bequeathed his estate and plant collections to the university.

[1] Today, the Garden supports research and instruction, and is a public greenspace.

Only remnants of Farrand's design remain, although restoration work has begun.

This article related to a garden in the United States is a stub.