Alamo Cenotaph, Marble sculpture at Alamo Plaza, San Antonio, US.

The Alamo Cenotaph is a marble sculpture at Alamo Plaza in San Antonio, rising approximately 60 feet (18 meters) in white Georgia marble. The figures of defenders are carved into detailed relief panels that wrap around the base and depict scenes from the siege.

During the 1936 Texas Centennial the state provided $100,000 for a monument, commissioned from sculptor Pompeo Coppini. San Antonio mayor Maury Maverick dedicated it on November 11, 1940, the first Alamo monument erected in the city. The shaft rises sixty feet from a base forty feet long and twelve feet wide, built of grey Georgia marble and pink Texas granite.

The names of 187 known defenders are engraved into the marble, allowing visitors to read each individual inscription. The monument serves as a place of remembrance where people often leave flowers or take photographs.

The monument stands freely on the plaza and remains accessible around the clock, as the area is not gated. Visitors can view the relief work up close and read inscriptions on all four sides.

The cenotaph's 187 names were compiled by historian Amelia Williams; later research found that some listed never fought at the Alamo. In 1982 Ozzy Osbourne urinated on the monument while wearing a dress, was arrested and banned from performing in San Antonio for a decade, later apologizing and donating $10,000 to the Daughters of the Republic of Texas.