An infinite loop is a sequence of instructions in a computer program that repeats endlessly without a terminating condition. This can occur when a loop's exit criteria are never met, causing the program to run indefinitely. Infinite loops can lead to unresponsive applications and excessive resource consumption. In programming, infinite loops are often unintentional, resulting from errors in logic or coding. They can be found in various programming languages, such as Python, Java, and C++. While sometimes used intentionally for specific tasks, most often, they are considered bugs that need to be fixed to ensure proper program functionality.