Indirect addressing is a method used in computer programming and assembly language to access data stored in memory. Instead of directly specifying the memory location of the data, it uses a pointer or reference that points to the actual address. This allows for more flexible and dynamic data manipulation. In indirect addressing, the address of the data is stored in a register or memory location. When the program needs to access the data, it first retrieves the address from the pointer and then accesses the data at that location. This technique is useful for handling arrays and complex data structures efficiently.