Pleasant Grove City v. Summum, 555 U.S. 460 (2009), is a decision from the Supreme Court of the United States which ruled on the U.S. Constitution's prohibition on a government establishment of religion specifically with respect to monuments (e.g., statues) on public land.

In this case, the United States Supreme Court considered whether the municipality of Pleasant Grove, Utah, which allows privately donated monuments, including one of the Ten Commandments, to be displayed on public property, must also let the Summum church put up its own statue, similar in size to the one of the Ten Commandments.

[2] Arguing for the petitioner (the City of Pleasant Grove) was Jay Alan Sekulow, chief counsel for the American Center for Law and Justice (ACLJ), and for the Summum, attorney Pamela Harris of the firm O’Melveny & Myers.

Justice Samuel Alito, in his opinion for the court, explained that a municipality's acceptance and acquisition of a privately funded permanent monument erected in a public park, while refusing to accept other privately funded permanent memorials, is a valid expression of governmental speech, which is permissible and not an unconstitutional interference with the First Amendment's guarantee of free speech.

He opined that even long winded speakers eventually go home with their leaflets, and holiday displays are taken down; but, permanent monuments endure, and are obviously associated with their owners.