The priority queue is applied in many algorithms as well as several real-life applications. Some of these are described below: 1. Huffman Algorithm: The Huffman tree generated in the Huffman Algorithm of data compression, uses a priority queue to implement the tree. 2. Prim’s Algorithm: This algorithm uses a priority queue to speed up the process of the exact minimum function. 3. Dijkstra’s Algorithm: This algorithm uses a heap or a priority queue to extract the minimum value. Priority queue makes the process of getting the minimum quite efficient. 4. Operating System: The priority queue is used in several Operating Systems processes such as load balancing and interruption handling.