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Eastbourne's Devonshire Park is the venue for the International Women's Open, a Women's tennis tournament traditionally seen as the warm-up to Wimbledon. The tournament has been held in the town since 1975, and although in 2007 the Lawn Tennis Association was considering relocating it to London, they instead opted to merge it with the Nottingham Open, a men's event normally held at the same time, starting with the 2009 tournament.

On a national level, Eastbourne is home to three senior football clubs all bearing the town's name. Eastbourne Borough F.C. play in the Blue Square Premier, having been promoted from the Blue Square South at the end of the 2007–08 season, Eastbourne Town F.C. won promotion in 2006–07 to Ryman League Division One South while Eastbourne United F.C. play in Sussex County League Division 1. The Eastbourne Eagles are a speedway club located at Arlington Stadium, just outside the town. They compete in the Speedway Elite League, the highest level of speedway in England. The sport was staged prior to the war and included occasional team matches. The Eagles featured in the original National League Division Three in 1947 but the team transferred to Hastings in 1948. The track staged meetings over the years at the lower level but failed to gain entry to the Provincial League in the early 1960s. The track became involved in League speedway again in the 1970s and has operated continuously since.  The Stadium also sees stock-car racing on Wednesday evenings in the summer months.

Eastbourne is represented at a local level in many other sports including cricket, hockey, rugby, lacrosse and golf. There is an annual extreme sports festival held at the eastern end of the seafront.

In addition to the town's own sporting teams, Eastbourne plays host to the University of Brighton's sports teams including the successful Women's Football Team who in the 2006–07 season were second only to Loughborough University Women's Football Team in the British Universities Sports Association (B.U.S.A.) championships, and then went on to represent the UK in the European University Sports Association championships.

There was once a small race-course at Bullock Down near Beachy Head.