Silent Hunter 5: Battle of the Atlantic is a submarine simulator for Microsoft Windows developed by Ubisoft Bucharest and published by Ubisoft. It is the fifth and latest installment of the Silent Hunter franchise and the successor of Silent Hunter 4: Wolves of the Pacific. Like Silent Hunter II and Silent Hunter III, it places the player in command of a German U-boat during World War II, more specifically the Battle of the Atlantic.

A submarine simulator is a video game in which the player commands a submarine. The usual form of the game is to go on a series of missions, each of which features a number of encounters where the goal is to sink surface ships and to survive counterattacks by destroyers. Submarine simulators are notable for the highly-variable pace of the game; it may take hours of simulated time to get into position to attack a well-defended convoy, and sub simulators typically include an option for players to adjust the ratio of real time to simulated time up and down as desired.