The Adams Memorial is a grave marker located in Section E of Rock Creek Cemetery, Washington, D.C., that features a cast bronze allegorical sculpture by Augustus Saint-Gaudens. The shrouded figure is seated against a granite block, which forms one side of a hexagonal plot, designed by architect Stanford White.

Erected in 1891, the monument was commissioned by author/historian Henry Adams (a member of the Adams political family) as a memorial to his wife, Clover Hooper Adams.

Adams advised Saint-Gaudens to contemplate iconic images from Buddhist devotional art. One such subject, Kwannon (also known as Guan Yin, the Bodhisattva of compassion), is frequently depicted as a seated figure draped in cloth. Saint-Gaudens may also have been influenced by Parisian funerary art from his stay in France.

Saint-Gaudens's name for the bronze figure is The Mystery of the Hereafter and The Peace of God that Passeth Understanding, but the public commonly called it Grief—an appellation that Henry Adams apparently disliked. In a letter addressed to Homer Saint-Gaudens, on January 24, 1908, Adams instructed him:

"Do not allow the world to tag my figure with a name! Every magazine writer wants to label it as some American patent medicine for popular consumption—Grief, Despair, Pear's Soap, or Macy's Mens' Suits Made to Measure. Your father meant it to ask a question, not to give an answer; and the man who answers will be damned to eternity like the men who answered the Sphinx."

At the time of Saint-Gaudens's death, the statue was well-known as an important work of American sculpture. Its popularity inspired at least one forgery, the Black Aggie, which was sold to General Felix Agnus for his gravesite.

An informative and engaging study of the memorial and the relationship between Clover and Henry Adams is Clover: The Tragic Love Story of Clover and Henry Adams and Their Brilliant Life in America's Gilded Age by historian Otto Friedrich.