The 2nd Escort Group (2 EG) was a British anti-submarine formation of the Royal Navy which saw action during the Second World War, principally in the Battle of the Atlantic.
2 EG was formed in April 1943, one of five such support groups formed at the crisis point of the campaign. It was to act as reinforcement to convoys under attack, with the capacity to actively hunt and destroy U-boats, rather than be restricted to escort duties. Comprising six sloops of the Black Swan-class, the group was led by Captain F.J. "Johnnie" Walker, Britain's most successful anti-submarine warfare commander, in . The combination of an active hunting group and a charismatic, determined and innovative anti-submarine specialist such as Walker proved to be a potent force; 2 SG was the most successful anti-submarine unit of the war, being credited with the destruction of 23 U-boats during two years of active service.
Officially called 2nd Escort Group, it was more commonly referred to as