Obsidian artifacts are one of the few material culture remains on East Texas sites that provide direct evidence of distant links between East Texas’s native American peoples and native American communities in the Southwest or the Northwestern Plains. Other such material culture items include marine shells from the Gulf of California, turquoise from New Mexico sources, and sherds from ceramic vessels made in the Puebloan Southwest. Such artifacts, however, are rarely recovered in East Texas archaeological sites. In this article, we summarize the available information on obsidian artifacts from East Texas archaeological sites, much of it gathered from Hester’s Texas Obsidian Project (TOP), including obsidian source data when it is available