A developer named ArnoldTheBatra maintains builds of Chromium OS that can be run as a live disk or installed on a hard drive. These are often the "ISOs" tech enthusiasts are actually looking for.
When searching for "Chrome OS Download ISO," you will encounter many dangerous websites. Google Chrome Os Download Iso 64 Bit
Since a true ISO doesn’t exist, here is the official Google-approved method to get a Chrome-like OS on your 64-bit machine using Chrome OS Flex. Google Chrome Os Download Iso 64 Bit