A "Do While" loop is a control structure in programming that repeatedly executes a block of code as long as a specified condition is true. The key feature of this loop is that it guarantees the code inside the loop will run at least once, regardless of the condition. This is useful when you want to perform an action and then check if it should continue based on the outcome. In a "Do While" loop, the condition is evaluated after the code block has executed. If the condition remains true, the loop will run again. This structure is commonly used in languages like Java, C++, and Python to manage repetitive tasks efficiently.